/*!
 * Vue.js v2.6.12
 * (c) 2014-2020 Evan You
 * Released under the MIT License.
 */
;(function (global, factory) {
	typeof exports === "object" && typeof module !== "undefined"
		? (module.exports = factory())
		: typeof define === "function" && define.amd
		? define(factory)
		: ((global = global || self), (global.Vue = factory()))
})(this, function () {
	"use strict"

	/*  */

	var emptyObject = Object.freeze({})

	// These helpers produce better VM code in JS engines due to their
	// explicitness and function inlining.
	function isUndef(v) {
		return v === undefined || v === null
	}

	function isDef(v) {
		return v !== undefined && v !== null
	}

	function isTrue(v) {
		return v === true
	}

	function isFalse(v) {
		return v === false
	}

	/**
	 * Check if value is primitive.
	 */
	function isPrimitive(value) {
		return (
			typeof value === "string" ||
			typeof value === "number" ||
			// $flow-disable-line
			typeof value === "symbol" ||
			typeof value === "boolean"
		)
	}

	/**
	 * Quick object check - this is primarily used to tell
	 * Objects from primitive values when we know the value
	 * is a JSON-compliant type.
	 */
	function isObject(obj) {
		return obj !== null && typeof obj === "object"
	}

	/**
	 * Get the raw type string of a value, e.g., [object Object].
	 */
	var _toString = Object.prototype.toString

	function toRawType(value) {
		return _toString.call(value).slice(8, -1)
	}

	/**
	 * Strict object type check. Only returns true
	 * for plain JavaScript objects.
	 */
	function isPlainObject(obj) {
		return _toString.call(obj) === "[object Object]"
	}

	function isRegExp(v) {
		return _toString.call(v) === "[object RegExp]"
	}

	/**
	 * Check if val is a valid array index.
	 */
	function isValidArrayIndex(val) {
		var n = parseFloat(String(val))
		return n >= 0 && Math.floor(n) === n && isFinite(val)
	}

	function isPromise(val) {
		return (
			isDef(val) &&
			typeof val.then === "function" &&
			typeof val.catch === "function"
		)
	}

	/**
	 * Convert a value to a string that is actually rendered.
	 */
	function toString(val) {
		return val == null
			? ""
			: Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
			? JSON.stringify(val, null, 2)
			: String(val)
	}

	/**
	 * Convert an input value to a number for persistence.
	 * If the conversion fails, return original string.
	 */
	function toNumber(val) {
		var n = parseFloat(val)
		return isNaN(n) ? val : n
	}

	/**
	 * Make a map and return a function for checking if a key
	 * is in that map.
	 */
	function makeMap(str, expectsLowerCase) {
		var map = Object.create(null)
		var list = str.split(",")
		for (var i = 0; i < list.length; i++) {
			map[list[i]] = true
		}
		return expectsLowerCase
			? function (val) {
					return map[val.toLowerCase()]
			  }
			: function (val) {
					return map[val]
			  }
	}

	/**
	 * Check if a tag is a built-in tag.
	 */
	var isBuiltInTag = makeMap("slot,component", true)

	/**
	 * Check if an attribute is a reserved attribute.
	 */
	var isReservedAttribute = makeMap("key,ref,slot,slot-scope,is")

	/**
	 * Remove an item from an array.
	 */
	function remove(arr, item) {
		if (arr.length) {
			var index = arr.indexOf(item)
			if (index > -1) {
				return arr.splice(index, 1)
			}
		}
	}

	/**
	 * Check whether an object has the property.
	 */
	var hasOwnProperty = Object.prototype.hasOwnProperty
	function hasOwn(obj, key) {
		return hasOwnProperty.call(obj, key)
	}

	/**
	 * Create a cached version of a pure function.
	 */
	function cached(fn) {
		var cache = Object.create(null)
		return function cachedFn(str) {
			var hit = cache[str]
			return hit || (cache[str] = fn(str))
		}
	}

	/**
	 * Camelize a hyphen-delimited string.
	 */
	var camelizeRE = /-(\w)/g
	var camelize = cached(function (str) {
		return str.replace(camelizeRE, function (_, c) {
			return c ? c.toUpperCase() : ""
		})
	})

	/**
	 * Capitalize a string.
	 */
	var capitalize = cached(function (str) {
		return str.charAt(0).toUpperCase() + str.slice(1)
	})

	/**
	 * Hyphenate a camelCase string.
	 */
	var hyphenateRE = /\B([A-Z])/g
	var hyphenate = cached(function (str) {
		return str.replace(hyphenateRE, "-$1").toLowerCase()
	})

	/**
	 * Simple bind polyfill for environments that do not support it,
	 * e.g., PhantomJS 1.x. Technically, we don't need this anymore
	 * since native bind is now performant enough in most browsers.
	 * But removing it would mean breaking code that was able to run in
	 * PhantomJS 1.x, so this must be kept for backward compatibility.
	 */

	/* istanbul ignore next */
	function polyfillBind(fn, ctx) {
		function boundFn(a) {
			var l = arguments.length
			return l
				? l > 1
					? fn.apply(ctx, arguments)
					: fn.call(ctx, a)
				: fn.call(ctx)
		}

		boundFn._length = fn.length
		return boundFn
	}

	function nativeBind(fn, ctx) {
		return fn.bind(ctx)
	}

	var bind = Function.prototype.bind ? nativeBind : polyfillBind

	/**
	 * Convert an Array-like object to a real Array.
	 */
	function toArray(list, start) {
		start = start || 0
		var i = list.length - start
		var ret = new Array(i)
		while (i--) {
			ret[i] = list[i + start]
		}
		return ret
	}

	/**
	 * Mix properties into target object.
	 */
	function extend(to, _from) {
		for (var key in _from) {
			to[key] = _from[key]
		}
		return to
	}

	/**
	 * Merge an Array of Objects into a single Object.
	 */
	function toObject(arr) {
		var res = {}
		for (var i = 0; i < arr.length; i++) {
			if (arr[i]) {
				extend(res, arr[i])
			}
		}
		return res
	}

	/* eslint-disable no-unused-vars */

	/**
	 * Perform no operation.
	 * Stubbing args to make Flow happy without leaving useless transpiled code
	 * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
	 */
	function noop(a, b, c) {}

	/**
	 * Always return false.
	 */
	var no = function (a, b, c) {
		return false
	}

	/* eslint-enable no-unused-vars */

	/**
	 * Return the same value.
	 */
	var identity = function (_) {
		return _
	}

	/**
	 * Generate a string containing static keys from compiler modules.
	 */
	function genStaticKeys(modules) {
		return modules
			.reduce(function (keys, m) {
				return keys.concat(m.staticKeys || [])
			}, [])
			.join(",")
	}

	/**
	 * Check if two values are loosely equal - that is,
	 * if they are plain objects, do they have the same shape?
	 */
	function looseEqual(a, b) {
		if (a === b) {
			return true
		}
		var isObjectA = isObject(a)
		var isObjectB = isObject(b)
		if (isObjectA && isObjectB) {
			try {
				var isArrayA = Array.isArray(a)
				var isArrayB = Array.isArray(b)
				if (isArrayA && isArrayB) {
					return (
						a.length === b.length &&
						a.every(function (e, i) {
							return looseEqual(e, b[i])
						})
					)
				} else if (a instanceof Date && b instanceof Date) {
					return a.getTime() === b.getTime()
				} else if (!isArrayA && !isArrayB) {
					var keysA = Object.keys(a)
					var keysB = Object.keys(b)
					return (
						keysA.length === keysB.length &&
						keysA.every(function (key) {
							return looseEqual(a[key], b[key])
						})
					)
				} else {
					/* istanbul ignore next */
					return false
				}
			} catch (e) {
				/* istanbul ignore next */
				return false
			}
		} else if (!isObjectA && !isObjectB) {
			return String(a) === String(b)
		} else {
			return false
		}
	}

	/**
	 * Return the first index at which a loosely equal value can be
	 * found in the array (if value is a plain object, the array must
	 * contain an object of the same shape), or -1 if it is not present.
	 */
	function looseIndexOf(arr, val) {
		for (var i = 0; i < arr.length; i++) {
			if (looseEqual(arr[i], val)) {
				return i
			}
		}
		return -1
	}

	/**
	 * Ensure a function is called only once.
	 */
	function once(fn) {
		var called = false
		return function () {
			if (!called) {
				called = true
				fn.apply(this, arguments)
			}
		}
	}

	var SSR_ATTR = "data-server-rendered"

	var ASSET_TYPES = ["component", "directive", "filter"]

	var LIFECYCLE_HOOKS = [
		"beforeCreate",
		"created",
		"beforeMount",
		"mounted",
		"beforeUpdate",
		"updated",
		"beforeDestroy",
		"destroyed",
		"activated",
		"deactivated",
		"errorCaptured",
		"serverPrefetch",
	]

	/*  */

	var config = {
		/**
		 * Option merge strategies (used in core/util/options)
		 */
		// $flow-disable-line
		optionMergeStrategies: Object.create(null),

		/**
		 * Whether to suppress warnings.
		 */
		silent: false,

		/**
		 * Show production mode tip message on boot?
		 */
		productionTip: "development" !== "production",

		/**
		 * Whether to enable devtools
		 */
		devtools: "development" !== "production",

		/**
		 * Whether to record perf
		 */
		performance: false,

		/**
		 * Error handler for watcher errors
		 */
		errorHandler: null,

		/**
		 * Warn handler for watcher warns
		 */
		warnHandler: null,

		/**
		 * Ignore certain custom elements
		 */
		ignoredElements: [],

		/**
		 * Custom user key aliases for v-on
		 */
		// $flow-disable-line
		keyCodes: Object.create(null),

		/**
		 * Check if a tag is reserved so that it cannot be registered as a
		 * component. This is platform-dependent and may be overwritten.
		 */
		isReservedTag: no,

		/**
		 * Check if an attribute is reserved so that it cannot be used as a component
		 * prop. This is platform-dependent and may be overwritten.
		 */
		isReservedAttr: no,

		/**
		 * Check if a tag is an unknown element.
		 * Platform-dependent.
		 */
		isUnknownElement: no,

		/**
		 * Get the namespace of an element
		 */
		getTagNamespace: noop,

		/**
		 * Parse the real tag name for the specific platform.
		 */
		parsePlatformTagName: identity,

		/**
		 * Check if an attribute must be bound using property, e.g. value
		 * Platform-dependent.
		 */
		mustUseProp: no,

		/**
		 * Perform updates asynchronously. Intended to be used by Vue Test Utils
		 * This will significantly reduce performance if set to false.
		 */
		async: true,

		/**
		 * Exposed for legacy reasons
		 */
		_lifecycleHooks: LIFECYCLE_HOOKS,
	}

	/*  */

	/**
	 * unicode letters used for parsing html tags, component names and property paths.
	 * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
	 * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
	 */
	var unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/

	/**
	 * Check if a string starts with $ or _
	 */
	function isReserved(str) {
		var c = (str + "").charCodeAt(0)
		return c === 0x24 || c === 0x5f
	}

	/**
	 * Define a property.
	 */
	function def(obj, key, val, enumerable) {
		Object.defineProperty(obj, key, {
			value: val,
			enumerable: !!enumerable,
			writable: true,
			configurable: true,
		})
	}

	/**
	 * Parse simple path.
	 */
	var bailRE = new RegExp("[^" + unicodeRegExp.source + ".$_\\d]")
	function parsePath(path) {
		if (bailRE.test(path)) {
			return
		}
		var segments = path.split(".")
		return function (obj) {
			for (var i = 0; i < segments.length; i++) {
				if (!obj) {
					return
				}
				obj = obj[segments[i]]
			}
			return obj
		}
	}

	/*  */

	// can we use __proto__?
	var hasProto = "__proto__" in {}

	// Browser environment sniffing
	var inBrowser = typeof window !== "undefined"
	var inWeex = typeof WXEnvironment !== "undefined" && !!WXEnvironment.platform
	var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase()
	var UA = inBrowser && window.navigator.userAgent.toLowerCase()
	var isIE = UA && /msie|trident/.test(UA)
	var isIE9 = UA && UA.indexOf("msie 9.0") > 0
	var isEdge = UA && UA.indexOf("edge/") > 0
	var isAndroid =
		(UA && UA.indexOf("android") > 0) || weexPlatform === "android"
	var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || weexPlatform === "ios"
	var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge
	var isPhantomJS = UA && /phantomjs/.test(UA)
	var isFF = UA && UA.match(/firefox\/(\d+)/)

	// Firefox has a "watch" function on Object.prototype...
	var nativeWatch = {}.watch

	var supportsPassive = false
	if (inBrowser) {
		try {
			var opts = {}
			Object.defineProperty(opts, "passive", {
				get: function get() {
					/* istanbul ignore next */
					supportsPassive = true
				},
			}) // https://github.com/facebook/flow/issues/285
			window.addEventListener("test-passive", null, opts)
		} catch (e) {}
	}

	// this needs to be lazy-evaled because vue may be required before
	// vue-server-renderer can set VUE_ENV
	var _isServer
	var isServerRendering = function () {
		if (_isServer === undefined) {
			/* istanbul ignore if */
			if (!inBrowser && !inWeex && typeof global !== "undefined") {
				// detect presence of vue-server-renderer and avoid
				// Webpack shimming the process
				_isServer =
					global["process"] && global["process"].env.VUE_ENV === "server"
			} else {
				_isServer = false
			}
		}
		return _isServer
	}

	// detect devtools
	var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__

	/* istanbul ignore next */
	function isNative(Ctor) {
		return typeof Ctor === "function" && /native code/.test(Ctor.toString())
	}

	var hasSymbol =
		typeof Symbol !== "undefined" &&
		isNative(Symbol) &&
		typeof Reflect !== "undefined" &&
		isNative(Reflect.ownKeys)

	var _Set // $flow-disable-line
	/* istanbul ignore if */ if (typeof Set !== "undefined" && isNative(Set)) {
		// use native Set when available.
		_Set = Set
	} else {
		// a non-standard Set polyfill that only works with primitive keys.
		_Set = /*@__PURE__*/ (function () {
			function Set() {
				this.set = Object.create(null)
			}
			Set.prototype.has = function has(key) {
				return this.set[key] === true
			}
			Set.prototype.add = function add(key) {
				this.set[key] = true
			}
			Set.prototype.clear = function clear() {
				this.set = Object.create(null)
			}

			return Set
		})()
	}

	/*  */

	var warn = noop
	var tip = noop
	var generateComponentTrace = noop // work around flow check
	var formatComponentName = noop

	{
		var hasConsole = typeof console !== "undefined"
		var classifyRE = /(?:^|[-_])(\w)/g
		var classify = function (str) {
			return str
				.replace(classifyRE, function (c) {
					return c.toUpperCase()
				})
				.replace(/[-_]/g, "")
		}

		warn = function (msg, vm) {
			var trace = vm ? generateComponentTrace(vm) : ""

			if (config.warnHandler) {
				config.warnHandler.call(null, msg, vm, trace)
			} else if (hasConsole && !config.silent) {
				console.error("[Vue warn]: " + msg + trace)
			}
		}

		tip = function (msg, vm) {
			if (hasConsole && !config.silent) {
				console.warn(
					"[Vue tip]: " + msg + (vm ? generateComponentTrace(vm) : "")
				)
			}
		}

		formatComponentName = function (vm, includeFile) {
			if (vm.$root === vm) {
				return "<Root>"
			}
			var options =
				typeof vm === "function" && vm.cid != null
					? vm.options
					: vm._isVue
					? vm.$options || vm.constructor.options
					: vm
			var name = options.name || options._componentTag
			var file = options.__file
			if (!name && file) {
				var match = file.match(/([^/\\]+)\.vue$/)
				name = match && match[1]
			}

			return (
				(name ? "<" + classify(name) + ">" : "<Anonymous>") +
				(file && includeFile !== false ? " at " + file : "")
			)
		}

		var repeat = function (str, n) {
			var res = ""
			while (n) {
				if (n % 2 === 1) {
					res += str
				}
				if (n > 1) {
					str += str
				}
				n >>= 1
			}
			return res
		}

		generateComponentTrace = function (vm) {
			if (vm._isVue && vm.$parent) {
				var tree = []
				var currentRecursiveSequence = 0
				while (vm) {
					if (tree.length > 0) {
						var last = tree[tree.length - 1]
						if (last.constructor === vm.constructor) {
							currentRecursiveSequence++
							vm = vm.$parent
							continue
						} else if (currentRecursiveSequence > 0) {
							tree[tree.length - 1] = [last, currentRecursiveSequence]
							currentRecursiveSequence = 0
						}
					}
					tree.push(vm)
					vm = vm.$parent
				}
				return (
					"\n\nfound in\n\n" +
					tree
						.map(function (vm, i) {
							return (
								"" +
								(i === 0 ? "---> " : repeat(" ", 5 + i * 2)) +
								(Array.isArray(vm)
									? formatComponentName(vm[0]) +
									  "... (" +
									  vm[1] +
									  " recursive calls)"
									: formatComponentName(vm))
							)
						})
						.join("\n")
				)
			} else {
				return "\n\n(found in " + formatComponentName(vm) + ")"
			}
		}
	}

	/*  */

	var uid = 0

	/**
	 * A dep is an observable that can have multiple
	 * directives subscribing to it.
	 */
	var Dep = function Dep() {
		this.id = uid++
		this.subs = []
	}

	Dep.prototype.addSub = function addSub(sub) {
		this.subs.push(sub)
	}

	Dep.prototype.removeSub = function removeSub(sub) {
		remove(this.subs, sub)
	}

	Dep.prototype.depend = function depend() {
		if (Dep.target) {
			Dep.target.addDep(this)
		}
	}

	Dep.prototype.notify = function notify() {
		// stabilize the subscriber list first
		var subs = this.subs.slice()
		if (!config.async) {
			// subs aren't sorted in scheduler if not running async
			// we need to sort them now to make sure they fire in correct
			// order
			subs.sort(function (a, b) {
				return a.id - b.id
			})
		}
		for (var i = 0, l = subs.length; i < l; i++) {
			subs[i].update()
		}
	}

	// The current target watcher being evaluated.
	// This is globally unique because only one watcher
	// can be evaluated at a time.
	Dep.target = null
	var targetStack = []

	function pushTarget(target) {
		targetStack.push(target)
		Dep.target = target
	}

	function popTarget() {
		targetStack.pop()
		Dep.target = targetStack[targetStack.length - 1]
	}

	/*  */

	var VNode = function VNode(
		tag,
		data,
		children,
		text,
		elm,
		context,
		componentOptions,
		asyncFactory
	) {
		this.tag = tag
		this.data = data
		this.children = children
		this.text = text
		this.elm = elm
		this.ns = undefined
		this.context = context
		this.fnContext = undefined
		this.fnOptions = undefined
		this.fnScopeId = undefined
		this.key = data && data.key
		this.componentOptions = componentOptions
		this.componentInstance = undefined
		this.parent = undefined
		this.raw = false
		this.isStatic = false
		this.isRootInsert = true
		this.isComment = false
		this.isCloned = false
		this.isOnce = false
		this.asyncFactory = asyncFactory
		this.asyncMeta = undefined
		this.isAsyncPlaceholder = false
	}

	var prototypeAccessors = { child: { configurable: true } }

	// DEPRECATED: alias for componentInstance for backwards compat.
	/* istanbul ignore next */
	prototypeAccessors.child.get = function () {
		return this.componentInstance
	}

	Object.defineProperties(VNode.prototype, prototypeAccessors)

	var createEmptyVNode = function (text) {
		if (text === void 0) text = ""

		var node = new VNode()
		node.text = text
		node.isComment = true
		return node
	}

	function createTextVNode(val) {
		return new VNode(undefined, undefined, undefined, String(val))
	}

	// optimized shallow clone
	// used for static nodes and slot nodes because they may be reused across
	// multiple renders, cloning them avoids errors when DOM manipulations rely
	// on their elm reference.
	function cloneVNode(vnode) {
		var cloned = new VNode(
			vnode.tag,
			vnode.data,
			// #7975
			// clone children array to avoid mutating original in case of cloning
			// a child.
			vnode.children && vnode.children.slice(),
			vnode.text,
			vnode.elm,
			vnode.context,
			vnode.componentOptions,
			vnode.asyncFactory
		)
		cloned.ns = vnode.ns
		cloned.isStatic = vnode.isStatic
		cloned.key = vnode.key
		cloned.isComment = vnode.isComment
		cloned.fnContext = vnode.fnContext
		cloned.fnOptions = vnode.fnOptions
		cloned.fnScopeId = vnode.fnScopeId
		cloned.asyncMeta = vnode.asyncMeta
		cloned.isCloned = true
		return cloned
	}

	/*
	 * not type checking this file because flow doesn't play well with
	 * dynamically accessing methods on Array prototype
	 */

	var arrayProto = Array.prototype
	var arrayMethods = Object.create(arrayProto)

	var methodsToPatch = [
		"push",
		"pop",
		"shift",
		"unshift",
		"splice",
		"sort",
		"reverse",
	]

	/**
	 * Intercept mutating methods and emit events
	 */
	methodsToPatch.forEach(function (method) {
		// cache original method
		var original = arrayProto[method]
		def(arrayMethods, method, function mutator() {
			var args = [],
				len = arguments.length
			while (len--) args[len] = arguments[len]

			var result = original.apply(this, args)
			var ob = this.__ob__
			var inserted
			switch (method) {
				case "push":
				case "unshift":
					inserted = args
					break
				case "splice":
					inserted = args.slice(2)
					break
			}
			if (inserted) {
				ob.observeArray(inserted)
			}
			// notify change
			ob.dep.notify()
			return result
		})
	})

	/*  */

	var arrayKeys = Object.getOwnPropertyNames(arrayMethods)

	/**
	 * In some cases we may want to disable observation inside a component's
	 * update computation.
	 */
	var shouldObserve = true

	function toggleObserving(value) {
		shouldObserve = value
	}

	/**
	 * Observer class that is attached to each observed
	 * object. Once attached, the observer converts the target
	 * object's property keys into getter/setters that
	 * collect dependencies and dispatch updates.
	 */
	var Observer = function Observer(value) {
		this.value = value
		this.dep = new Dep()
		this.vmCount = 0
		def(value, "__ob__", this)
		if (Array.isArray(value)) {
			if (hasProto) {
				protoAugment(value, arrayMethods)
			} else {
				copyAugment(value, arrayMethods, arrayKeys)
			}
			this.observeArray(value)
		} else {
			this.walk(value)
		}
	}

	/**
	 * Walk through all properties and convert them into
	 * getter/setters. This method should only be called when
	 * value type is Object.
	 */
	Observer.prototype.walk = function walk(obj) {
		var keys = Object.keys(obj)
		for (var i = 0; i < keys.length; i++) {
			defineReactive$$1(obj, keys[i])
		}
	}

	/**
	 * Observe a list of Array items.
	 */
	Observer.prototype.observeArray = function observeArray(items) {
		for (var i = 0, l = items.length; i < l; i++) {
			observe(items[i])
		}
	}

	// helpers

	/**
	 * Augment a target Object or Array by intercepting
	 * the prototype chain using __proto__
	 */
	function protoAugment(target, src) {
		/* eslint-disable no-proto */
		target.__proto__ = src
		/* eslint-enable no-proto */
	}

	/**
	 * Augment a target Object or Array by defining
	 * hidden properties.
	 */
	/* istanbul ignore next */
	function copyAugment(target, src, keys) {
		for (var i = 0, l = keys.length; i < l; i++) {
			var key = keys[i]
			def(target, key, src[key])
		}
	}

	/**
	 * Attempt to create an observer instance for a value,
	 * returns the new observer if successfully observed,
	 * or the existing observer if the value already has one.
	 */
	function observe(value, asRootData) {
		if (!isObject(value) || value instanceof VNode) {
			return
		}
		var ob
		if (hasOwn(value, "__ob__") && value.__ob__ instanceof Observer) {
			ob = value.__ob__
		} else if (
			shouldObserve &&
			!isServerRendering() &&
			(Array.isArray(value) || isPlainObject(value)) &&
			Object.isExtensible(value) &&
			!value._isVue
		) {
			ob = new Observer(value)
		}
		if (asRootData && ob) {
			ob.vmCount++
		}
		return ob
	}

	/**
	 * Define a reactive property on an Object.
	 */
	function defineReactive$$1(obj, key, val, customSetter, shallow) {
		var dep = new Dep()

		var property = Object.getOwnPropertyDescriptor(obj, key)
		if (property && property.configurable === false) {
			return
		}

		// cater for pre-defined getter/setters
		var getter = property && property.get
		var setter = property && property.set
		if ((!getter || setter) && arguments.length === 2) {
			val = obj[key]
		}

		var childOb = !shallow && observe(val)
		Object.defineProperty(obj, key, {
			enumerable: true,
			configurable: true,
			get: function reactiveGetter() {
				var value = getter ? getter.call(obj) : val
				if (Dep.target) {
					dep.depend()
					if (childOb) {
						childOb.dep.depend()
						if (Array.isArray(value)) {
							dependArray(value)
						}
					}
				}
				return value
			},
			set: function reactiveSetter(newVal) {
				var value = getter ? getter.call(obj) : val
				/* eslint-disable no-self-compare */
				if (newVal === value || (newVal !== newVal && value !== value)) {
					return
				}
				/* eslint-enable no-self-compare */
				if (customSetter) {
					customSetter()
				}
				// #7981: for accessor properties without setter
				if (getter && !setter) {
					return
				}
				if (setter) {
					setter.call(obj, newVal)
				} else {
					val = newVal
				}
				childOb = !shallow && observe(newVal)
				dep.notify()
			},
		})
	}

	/**
	 * Set a property on an object. Adds the new property and
	 * triggers change notification if the property doesn't
	 * already exist.
	 */
	function set(target, key, val) {
		if (isUndef(target) || isPrimitive(target)) {
			warn(
				"Cannot set reactive property on undefined, null, or primitive value: " +
					target
			)
		}
		if (Array.isArray(target) && isValidArrayIndex(key)) {
			target.length = Math.max(target.length, key)
			target.splice(key, 1, val)
			return val
		}
		if (key in target && !(key in Object.prototype)) {
			target[key] = val
			return val
		}
		var ob = target.__ob__
		if (target._isVue || (ob && ob.vmCount)) {
			warn(
				"Avoid adding reactive properties to a Vue instance or its root $data " +
					"at runtime - declare it upfront in the data option."
			)
			return val
		}
		if (!ob) {
			target[key] = val
			return val
		}
		defineReactive$$1(ob.value, key, val)
		ob.dep.notify()
		return val
	}

	/**
	 * Delete a property and trigger change if necessary.
	 */
	function del(target, key) {
		if (isUndef(target) || isPrimitive(target)) {
			warn(
				"Cannot delete reactive property on undefined, null, or primitive value: " +
					target
			)
		}
		if (Array.isArray(target) && isValidArrayIndex(key)) {
			target.splice(key, 1)
			return
		}
		var ob = target.__ob__
		if (target._isVue || (ob && ob.vmCount)) {
			warn(
				"Avoid deleting properties on a Vue instance or its root $data " +
					"- just set it to null."
			)
			return
		}
		if (!hasOwn(target, key)) {
			return
		}
		delete target[key]
		if (!ob) {
			return
		}
		ob.dep.notify()
	}

	/**
	 * Collect dependencies on array elements when the array is touched, since
	 * we cannot intercept array element access like property getters.
	 */
	function dependArray(value) {
		for (var e = void 0, i = 0, l = value.length; i < l; i++) {
			e = value[i]
			e && e.__ob__ && e.__ob__.dep.depend()
			if (Array.isArray(e)) {
				dependArray(e)
			}
		}
	}

	/*  */

	/**
	 * Option overwriting strategies are functions that handle
	 * how to merge a parent option value and a child option
	 * value into the final value.
	 */
	var strats = config.optionMergeStrategies

	/**
	 * Options with restrictions
	 */
	{
		strats.el = strats.propsData = function (parent, child, vm, key) {
			if (!vm) {
				warn(
					'option "' +
						key +
						'" can only be used during instance ' +
						"creation with the `new` keyword."
				)
			}
			return defaultStrat(parent, child)
		}
	}

	/**
	 * Helper that recursively merges two data objects together.
	 */
	function mergeData(to, from) {
		if (!from) {
			return to
		}
		var key, toVal, fromVal

		var keys = hasSymbol ? Reflect.ownKeys(from) : Object.keys(from)

		for (var i = 0; i < keys.length; i++) {
			key = keys[i]
			// in case the object is already observed...
			if (key === "__ob__") {
				continue
			}
			toVal = to[key]
			fromVal = from[key]
			if (!hasOwn(to, key)) {
				set(to, key, fromVal)
			} else if (
				toVal !== fromVal &&
				isPlainObject(toVal) &&
				isPlainObject(fromVal)
			) {
				mergeData(toVal, fromVal)
			}
		}
		return to
	}

	/**
	 * Data
	 */
	function mergeDataOrFn(parentVal, childVal, vm) {
		if (!vm) {
			// in a Vue.extend merge, both should be functions
			if (!childVal) {
				return parentVal
			}
			if (!parentVal) {
				return childVal
			}
			// when parentVal & childVal are both present,
			// we need to return a function that returns the
			// merged result of both functions... no need to
			// check if parentVal is a function here because
			// it has to be a function to pass previous merges.
			return function mergedDataFn() {
				return mergeData(
					typeof childVal === "function" ? childVal.call(this, this) : childVal,
					typeof parentVal === "function"
						? parentVal.call(this, this)
						: parentVal
				)
			}
		} else {
			return function mergedInstanceDataFn() {
				// instance merge
				var instanceData =
					typeof childVal === "function" ? childVal.call(vm, vm) : childVal
				var defaultData =
					typeof parentVal === "function" ? parentVal.call(vm, vm) : parentVal
				if (instanceData) {
					return mergeData(instanceData, defaultData)
				} else {
					return defaultData
				}
			}
		}
	}

	strats.data = function (parentVal, childVal, vm) {
		if (!vm) {
			if (childVal && typeof childVal !== "function") {
				warn(
					'The "data" option should be a function ' +
						"that returns a per-instance value in component " +
						"definitions.",
					vm
				)

				return parentVal
			}
			return mergeDataOrFn(parentVal, childVal)
		}

		return mergeDataOrFn(parentVal, childVal, vm)
	}

	/**
	 * Hooks and props are merged as arrays.
	 */
	function mergeHook(parentVal, childVal) {
		var res = childVal
			? parentVal
				? parentVal.concat(childVal)
				: Array.isArray(childVal)
				? childVal
				: [childVal]
			: parentVal
		return res ? dedupeHooks(res) : res
	}

	function dedupeHooks(hooks) {
		var res = []
		for (var i = 0; i < hooks.length; i++) {
			if (res.indexOf(hooks[i]) === -1) {
				res.push(hooks[i])
			}
		}
		return res
	}

	LIFECYCLE_HOOKS.forEach(function (hook) {
		strats[hook] = mergeHook
	})

	/**
	 * Assets
	 *
	 * When a vm is present (instance creation), we need to do
	 * a three-way merge between constructor options, instance
	 * options and parent options.
	 */
	function mergeAssets(parentVal, childVal, vm, key) {
		var res = Object.create(parentVal || null)
		if (childVal) {
			assertObjectType(key, childVal, vm)
			return extend(res, childVal)
		} else {
			return res
		}
	}

	ASSET_TYPES.forEach(function (type) {
		strats[type + "s"] = mergeAssets
	})

	/**
	 * Watchers.
	 *
	 * Watchers hashes should not overwrite one
	 * another, so we merge them as arrays.
	 */
	strats.watch = function (parentVal, childVal, vm, key) {
		// work around Firefox's Object.prototype.watch...
		if (parentVal === nativeWatch) {
			parentVal = undefined
		}
		if (childVal === nativeWatch) {
			childVal = undefined
		}
		/* istanbul ignore if */
		if (!childVal) {
			return Object.create(parentVal || null)
		}
		{
			assertObjectType(key, childVal, vm)
		}
		if (!parentVal) {
			return childVal
		}
		var ret = {}
		extend(ret, parentVal)
		for (var key$1 in childVal) {
			var parent = ret[key$1]
			var child = childVal[key$1]
			if (parent && !Array.isArray(parent)) {
				parent = [parent]
			}
			ret[key$1] = parent
				? parent.concat(child)
				: Array.isArray(child)
				? child
				: [child]
		}
		return ret
	}

	/**
	 * Other object hashes.
	 */
	strats.props = strats.methods = strats.inject = strats.computed = function (
		parentVal,
		childVal,
		vm,
		key
	) {
		if (childVal && "development" !== "production") {
			assertObjectType(key, childVal, vm)
		}
		if (!parentVal) {
			return childVal
		}
		var ret = Object.create(null)
		extend(ret, parentVal)
		if (childVal) {
			extend(ret, childVal)
		}
		return ret
	}
	strats.provide = mergeDataOrFn

	/**
	 * Default strategy.
	 */
	var defaultStrat = function (parentVal, childVal) {
		return childVal === undefined ? parentVal : childVal
	}

	/**
	 * Validate component names
	 */
	function checkComponents(options) {
		for (var key in options.components) {
			validateComponentName(key)
		}
	}

	function validateComponentName(name) {
		if (
			!new RegExp("^[a-zA-Z][\\-\\.0-9_" + unicodeRegExp.source + "]*$").test(
				name
			)
		) {
			warn(
				'Invalid component name: "' +
					name +
					'". Component names ' +
					"should conform to valid custom element name in html5 specification."
			)
		}
		if (isBuiltInTag(name) || config.isReservedTag(name)) {
			warn(
				"Do not use built-in or reserved HTML elements as component " +
					"id: " +
					name
			)
		}
	}

	/**
	 * Ensure all props option syntax are normalized into the
	 * Object-based format.
	 */
	function normalizeProps(options, vm) {
		var props = options.props
		if (!props) {
			return
		}
		var res = {}
		var i, val, name
		if (Array.isArray(props)) {
			i = props.length
			while (i--) {
				val = props[i]
				if (typeof val === "string") {
					name = camelize(val)
					res[name] = { type: null }
				} else {
					warn("props must be strings when using array syntax.")
				}
			}
		} else if (isPlainObject(props)) {
			for (var key in props) {
				val = props[key]
				name = camelize(key)
				res[name] = isPlainObject(val) ? val : { type: val }
			}
		} else {
			warn(
				'Invalid value for option "props": expected an Array or an Object, ' +
					"but got " +
					toRawType(props) +
					".",
				vm
			)
		}
		options.props = res
	}

	/**
	 * Normalize all injections into Object-based format
	 */
	function normalizeInject(options, vm) {
		var inject = options.inject
		if (!inject) {
			return
		}
		var normalized = (options.inject = {})
		if (Array.isArray(inject)) {
			for (var i = 0; i < inject.length; i++) {
				normalized[inject[i]] = { from: inject[i] }
			}
		} else if (isPlainObject(inject)) {
			for (var key in inject) {
				var val = inject[key]
				normalized[key] = isPlainObject(val)
					? extend({ from: key }, val)
					: { from: val }
			}
		} else {
			warn(
				'Invalid value for option "inject": expected an Array or an Object, ' +
					"but got " +
					toRawType(inject) +
					".",
				vm
			)
		}
	}

	/**
	 * Normalize raw function directives into object format.
	 */
	function normalizeDirectives(options) {
		var dirs = options.directives
		if (dirs) {
			for (var key in dirs) {
				var def$$1 = dirs[key]
				if (typeof def$$1 === "function") {
					dirs[key] = { bind: def$$1, update: def$$1 }
				}
			}
		}
	}

	function assertObjectType(name, value, vm) {
		if (!isPlainObject(value)) {
			warn(
				'Invalid value for option "' +
					name +
					'": expected an Object, ' +
					"but got " +
					toRawType(value) +
					".",
				vm
			)
		}
	}

	/**
	 * Merge two option objects into a new one.
	 * Core utility used in both instantiation and inheritance.
	 */
	function mergeOptions(parent, child, vm) {
		{
			checkComponents(child)
		}

		if (typeof child === "function") {
			child = child.options
		}

		normalizeProps(child, vm)
		normalizeInject(child, vm)
		normalizeDirectives(child)

		// Apply extends and mixins on the child options,
		// but only if it is a raw options object that isn't
		// the result of another mergeOptions call.
		// Only merged options has the _base property.
		if (!child._base) {
			if (child.extends) {
				parent = mergeOptions(parent, child.extends, vm)
			}
			if (child.mixins) {
				for (var i = 0, l = child.mixins.length; i < l; i++) {
					parent = mergeOptions(parent, child.mixins[i], vm)
				}
			}
		}

		var options = {}
		var key
		for (key in parent) {
			mergeField(key)
		}
		for (key in child) {
			if (!hasOwn(parent, key)) {
				mergeField(key)
			}
		}
		function mergeField(key) {
			var strat = strats[key] || defaultStrat
			options[key] = strat(parent[key], child[key], vm, key)
		}
		return options
	}

	/**
	 * Resolve an asset.
	 * This function is used because child instances need access
	 * to assets defined in its ancestor chain.
	 */
	function resolveAsset(options, type, id, warnMissing) {
		/* istanbul ignore if */
		if (typeof id !== "string") {
			return
		}
		var assets = options[type]
		// check local registration variations first
		if (hasOwn(assets, id)) {
			return assets[id]
		}
		var camelizedId = camelize(id)
		if (hasOwn(assets, camelizedId)) {
			return assets[camelizedId]
		}
		var PascalCaseId = capitalize(camelizedId)
		if (hasOwn(assets, PascalCaseId)) {
			return assets[PascalCaseId]
		}
		// fallback to prototype chain
		var res = assets[id] || assets[camelizedId] || assets[PascalCaseId]
		if (warnMissing && !res) {
			warn("Failed to resolve " + type.slice(0, -1) + ": " + id, options)
		}
		return res
	}

	/*  */

	function validateProp(key, propOptions, propsData, vm) {
		var prop = propOptions[key]
		var absent = !hasOwn(propsData, key)
		var value = propsData[key]
		// boolean casting
		var booleanIndex = getTypeIndex(Boolean, prop.type)
		if (booleanIndex > -1) {
			if (absent && !hasOwn(prop, "default")) {
				value = false
			} else if (value === "" || value === hyphenate(key)) {
				// only cast empty string / same name to boolean if
				// boolean has higher priority
				var stringIndex = getTypeIndex(String, prop.type)
				if (stringIndex < 0 || booleanIndex < stringIndex) {
					value = true
				}
			}
		}
		// check default value
		if (value === undefined) {
			value = getPropDefaultValue(vm, prop, key)
			// since the default value is a fresh copy,
			// make sure to observe it.
			var prevShouldObserve = shouldObserve
			toggleObserving(true)
			observe(value)
			toggleObserving(prevShouldObserve)
		}
		{
			assertProp(prop, key, value, vm, absent)
		}
		return value
	}

	/**
	 * Get the default value of a prop.
	 */
	function getPropDefaultValue(vm, prop, key) {
		// no default, return undefined
		if (!hasOwn(prop, "default")) {
			return undefined
		}
		var def = prop.default
		// warn against non-factory defaults for Object & Array
		if (isObject(def)) {
			warn(
				'Invalid default value for prop "' +
					key +
					'": ' +
					"Props with type Object/Array must use a factory function " +
					"to return the default value.",
				vm
			)
		}
		// the raw prop value was also undefined from previous render,
		// return previous default value to avoid unnecessary watcher trigger
		if (
			vm &&
			vm.$options.propsData &&
			vm.$options.propsData[key] === undefined &&
			vm._props[key] !== undefined
		) {
			return vm._props[key]
		}
		// call factory function for non-Function types
		// a value is Function if its prototype is function even across different execution context
		return typeof def === "function" && getType(prop.type) !== "Function"
			? def.call(vm)
			: def
	}

	/**
	 * Assert whether a prop is valid.
	 */
	function assertProp(prop, name, value, vm, absent) {
		if (prop.required && absent) {
			warn('Missing required prop: "' + name + '"', vm)
			return
		}
		if (value == null && !prop.required) {
			return
		}
		var type = prop.type
		var valid = !type || type === true
		var expectedTypes = []
		if (type) {
			if (!Array.isArray(type)) {
				type = [type]
			}
			for (var i = 0; i < type.length && !valid; i++) {
				var assertedType = assertType(value, type[i])
				expectedTypes.push(assertedType.expectedType || "")
				valid = assertedType.valid
			}
		}

		if (!valid) {
			warn(getInvalidTypeMessage(name, value, expectedTypes), vm)
			return
		}
		var validator = prop.validator
		if (validator) {
			if (!validator(value)) {
				warn(
					'Invalid prop: custom validator check failed for prop "' +
						name +
						'".',
					vm
				)
			}
		}
	}

	var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/

	function assertType(value, type) {
		var valid
		var expectedType = getType(type)
		if (simpleCheckRE.test(expectedType)) {
			var t = typeof value
			valid = t === expectedType.toLowerCase()
			// for primitive wrapper objects
			if (!valid && t === "object") {
				valid = value instanceof type
			}
		} else if (expectedType === "Object") {
			valid = isPlainObject(value)
		} else if (expectedType === "Array") {
			valid = Array.isArray(value)
		} else {
			valid = value instanceof type
		}
		return {
			valid: valid,
			expectedType: expectedType,
		}
	}

	/**
	 * Use function string name to check built-in types,
	 * because a simple equality check will fail when running
	 * across different vms / iframes.
	 */
	function getType(fn) {
		var match = fn && fn.toString().match(/^\s*function (\w+)/)
		return match ? match[1] : ""
	}

	function isSameType(a, b) {
		return getType(a) === getType(b)
	}

	function getTypeIndex(type, expectedTypes) {
		if (!Array.isArray(expectedTypes)) {
			return isSameType(expectedTypes, type) ? 0 : -1
		}
		for (var i = 0, len = expectedTypes.length; i < len; i++) {
			if (isSameType(expectedTypes[i], type)) {
				return i
			}
		}
		return -1
	}

	function getInvalidTypeMessage(name, value, expectedTypes) {
		var message =
			'Invalid prop: type check failed for prop "' +
			name +
			'".' +
			" Expected " +
			expectedTypes.map(capitalize).join(", ")
		var expectedType = expectedTypes[0]
		var receivedType = toRawType(value)
		var expectedValue = styleValue(value, expectedType)
		var receivedValue = styleValue(value, receivedType)
		// check if we need to specify expected value
		if (
			expectedTypes.length === 1 &&
			isExplicable(expectedType) &&
			!isBoolean(expectedType, receivedType)
		) {
			message += " with value " + expectedValue
		}
		message += ", got " + receivedType + " "
		// check if we need to specify received value
		if (isExplicable(receivedType)) {
			message += "with value " + receivedValue + "."
		}
		return message
	}

	function styleValue(value, type) {
		if (type === "String") {
			return '"' + value + '"'
		} else if (type === "Number") {
			return "" + Number(value)
		} else {
			return "" + value
		}
	}

	function isExplicable(value) {
		var explicitTypes = ["string", "number", "boolean"]
		return explicitTypes.some(function (elem) {
			return value.toLowerCase() === elem
		})
	}

	function isBoolean() {
		var args = [],
			len = arguments.length
		while (len--) args[len] = arguments[len]

		return args.some(function (elem) {
			return elem.toLowerCase() === "boolean"
		})
	}

	/*  */

	function handleError(err, vm, info) {
		// Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
		// See: https://github.com/vuejs/vuex/issues/1505
		pushTarget()
		try {
			if (vm) {
				var cur = vm
				while ((cur = cur.$parent)) {
					var hooks = cur.$options.errorCaptured
					if (hooks) {
						for (var i = 0; i < hooks.length; i++) {
							try {
								var capture = hooks[i].call(cur, err, vm, info) === false
								if (capture) {
									return
								}
							} catch (e) {
								globalHandleError(e, cur, "errorCaptured hook")
							}
						}
					}
				}
			}
			globalHandleError(err, vm, info)
		} finally {
			popTarget()
		}
	}

	function invokeWithErrorHandling(handler, context, args, vm, info) {
		var res
		try {
			res = args ? handler.apply(context, args) : handler.call(context)
			if (res && !res._isVue && isPromise(res) && !res._handled) {
				res.catch(function (e) {
					return handleError(e, vm, info + " (Promise/async)")
				})
				// issue #9511
				// avoid catch triggering multiple times when nested calls
				res._handled = true
			}
		} catch (e) {
			handleError(e, vm, info)
		}
		return res
	}

	function globalHandleError(err, vm, info) {
		if (config.errorHandler) {
			try {
				return config.errorHandler.call(null, err, vm, info)
			} catch (e) {
				// if the user intentionally throws the original error in the handler,
				// do not log it twice
				if (e !== err) {
					logError(e, null, "config.errorHandler")
				}
			}
		}
		logError(err, vm, info)
	}

	function logError(err, vm, info) {
		{
			warn("Error in " + info + ': "' + err.toString() + '"', vm)
		}
		/* istanbul ignore else */
		if ((inBrowser || inWeex) && typeof console !== "undefined") {
			console.error(err)
		} else {
			throw err
		}
	}

	/*  */

	var isUsingMicroTask = false

	var callbacks = []
	var pending = false

	function flushCallbacks() {
		pending = false
		var copies = callbacks.slice(0)
		callbacks.length = 0
		for (var i = 0; i < copies.length; i++) {
			copies[i]()
		}
	}

	// Here we have async deferring wrappers using microtasks.
	// In 2.5 we used (macro) tasks (in combination with microtasks).
	// However, it has subtle problems when state is changed right before repaint
	// (e.g. #6813, out-in transitions).
	// Also, using (macro) tasks in event handler would cause some weird behaviors
	// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
	// So we now use microtasks everywhere, again.
	// A major drawback of this tradeoff is that there are some scenarios
	// where microtasks have too high a priority and fire in between supposedly
	// sequential events (e.g. #4521, #6690, which have workarounds)
	// or even between bubbling of the same event (#6566).
	var timerFunc

	// The nextTick behavior leverages the microtask queue, which can be accessed
	// via either native Promise.then or MutationObserver.
	// MutationObserver has wider support, however it is seriously bugged in
	// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
	// completely stops working after triggering a few times... so, if native
	// Promise is available, we will use it:
	/* istanbul ignore next, $flow-disable-line */
	if (typeof Promise !== "undefined" && isNative(Promise)) {
		var p = Promise.resolve()
		timerFunc = function () {
			p.then(flushCallbacks)
			// In problematic UIWebViews, Promise.then doesn't completely break, but
			// it can get stuck in a weird state where callbacks are pushed into the
			// microtask queue but the queue isn't being flushed, until the browser
			// needs to do some other work, e.g. handle a timer. Therefore we can
			// "force" the microtask queue to be flushed by adding an empty timer.
			if (isIOS) {
				setTimeout(noop)
			}
		}
		isUsingMicroTask = true
	} else if (
		!isIE &&
		typeof MutationObserver !== "undefined" &&
		(isNative(MutationObserver) ||
			// PhantomJS and iOS 7.x
			MutationObserver.toString() === "[object MutationObserverConstructor]")
	) {
		// Use MutationObserver where native Promise is not available,
		// e.g. PhantomJS, iOS7, Android 4.4
		// (#6466 MutationObserver is unreliable in IE11)
		var counter = 1
		var observer = new MutationObserver(flushCallbacks)
		var textNode = document.createTextNode(String(counter))
		observer.observe(textNode, {
			characterData: true,
		})
		timerFunc = function () {
			counter = (counter + 1) % 2
			textNode.data = String(counter)
		}
		isUsingMicroTask = true
	} else if (typeof setImmediate !== "undefined" && isNative(setImmediate)) {
		// Fallback to setImmediate.
		// Technically it leverages the (macro) task queue,
		// but it is still a better choice than setTimeout.
		timerFunc = function () {
			setImmediate(flushCallbacks)
		}
	} else {
		// Fallback to setTimeout.
		timerFunc = function () {
			setTimeout(flushCallbacks, 0)
		}
	}

	function nextTick(cb, ctx) {
		var _resolve
		callbacks.push(function () {
			if (cb) {
				try {
					cb.call(ctx)
				} catch (e) {
					handleError(e, ctx, "nextTick")
				}
			} else if (_resolve) {
				_resolve(ctx)
			}
		})
		if (!pending) {
			pending = true
			timerFunc()
		}
		// $flow-disable-line
		if (!cb && typeof Promise !== "undefined") {
			return new Promise(function (resolve) {
				_resolve = resolve
			})
		}
	}

	/*  */

	var mark
	var measure

	{
		var perf = inBrowser && window.performance
		/* istanbul ignore if */
		if (
			perf &&
			perf.mark &&
			perf.measure &&
			perf.clearMarks &&
			perf.clearMeasures
		) {
			mark = function (tag) {
				return perf.mark(tag)
			}
			measure = function (name, startTag, endTag) {
				perf.measure(name, startTag, endTag)
				perf.clearMarks(startTag)
				perf.clearMarks(endTag)
				// perf.clearMeasures(name)
			}
		}
	}

	/* not type checking this file because flow doesn't play well with Proxy */

	var initProxy

	{
		var allowedGlobals = makeMap(
			"Infinity,undefined,NaN,isFinite,isNaN," +
				"parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent," +
				"Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl," +
				"require" // for Webpack/Browserify
		)

		var warnNonPresent = function (target, key) {
			warn(
				'Property or method "' +
					key +
					'" is not defined on the instance but ' +
					"referenced during render. Make sure that this property is reactive, " +
					"either in the data option, or for class-based components, by " +
					"initializing the property. " +
					"See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.",
				target
			)
		}

		var warnReservedPrefix = function (target, key) {
			warn(
				'Property "' +
					key +
					'" must be accessed with "$data.' +
					key +
					'" because ' +
					'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
					"prevent conflicts with Vue internals. " +
					"See: https://vuejs.org/v2/api/#data",
				target
			)
		}

		var hasProxy = typeof Proxy !== "undefined" && isNative(Proxy)

		if (hasProxy) {
			var isBuiltInModifier = makeMap(
				"stop,prevent,self,ctrl,shift,alt,meta,exact"
			)
			config.keyCodes = new Proxy(config.keyCodes, {
				set: function set(target, key, value) {
					if (isBuiltInModifier(key)) {
						warn(
							"Avoid overwriting built-in modifier in config.keyCodes: ." + key
						)
						return false
					} else {
						target[key] = value
						return true
					}
				},
			})
		}

		var hasHandler = {
			has: function has(target, key) {
				var has = key in target
				var isAllowed =
					allowedGlobals(key) ||
					(typeof key === "string" &&
						key.charAt(0) === "_" &&
						!(key in target.$data))
				if (!has && !isAllowed) {
					if (key in target.$data) {
						warnReservedPrefix(target, key)
					} else {
						warnNonPresent(target, key)
					}
				}
				return has || !isAllowed
			},
		}

		var getHandler = {
			get: function get(target, key) {
				if (typeof key === "string" && !(key in target)) {
					if (key in target.$data) {
						warnReservedPrefix(target, key)
					} else {
						warnNonPresent(target, key)
					}
				}
				return target[key]
			},
		}

		initProxy = function initProxy(vm) {
			if (hasProxy) {
				// determine which proxy handler to use
				var options = vm.$options
				var handlers =
					options.render && options.render._withStripped
						? getHandler
						: hasHandler
				vm._renderProxy = new Proxy(vm, handlers)
			} else {
				vm._renderProxy = vm
			}
		}
	}

	/*  */

	var seenObjects = new _Set()

	/**
	 * Recursively traverse an object to evoke all converted
	 * getters, so that every nested property inside the object
	 * is collected as a "deep" dependency.
	 */
	function traverse(val) {
		_traverse(val, seenObjects)
		seenObjects.clear()
	}

	function _traverse(val, seen) {
		var i, keys
		var isA = Array.isArray(val)
		if (
			(!isA && !isObject(val)) ||
			Object.isFrozen(val) ||
			val instanceof VNode
		) {
			return
		}
		if (val.__ob__) {
			var depId = val.__ob__.dep.id
			if (seen.has(depId)) {
				return
			}
			seen.add(depId)
		}
		if (isA) {
			i = val.length
			while (i--) {
				_traverse(val[i], seen)
			}
		} else {
			keys = Object.keys(val)
			i = keys.length
			while (i--) {
				_traverse(val[keys[i]], seen)
			}
		}
	}

	/*  */

	var normalizeEvent = cached(function (name) {
		var passive = name.charAt(0) === "&"
		name = passive ? name.slice(1) : name
		var once$$1 = name.charAt(0) === "~" // Prefixed last, checked first
		name = once$$1 ? name.slice(1) : name
		var capture = name.charAt(0) === "!"
		name = capture ? name.slice(1) : name
		return {
			name: name,
			once: once$$1,
			capture: capture,
			passive: passive,
		}
	})

	function createFnInvoker(fns, vm) {
		function invoker() {
			var arguments$1 = arguments

			var fns = invoker.fns
			if (Array.isArray(fns)) {
				var cloned = fns.slice()
				for (var i = 0; i < cloned.length; i++) {
					invokeWithErrorHandling(
						cloned[i],
						null,
						arguments$1,
						vm,
						"v-on handler"
					)
				}
			} else {
				// return handler return value for single handlers
				return invokeWithErrorHandling(fns, null, arguments, vm, "v-on handler")
			}
		}
		invoker.fns = fns
		return invoker
	}

	function updateListeners(on, oldOn, add, remove$$1, createOnceHandler, vm) {
		var name, def$$1, cur, old, event
		for (name in on) {
			def$$1 = cur = on[name]
			old = oldOn[name]
			event = normalizeEvent(name)
			if (isUndef(cur)) {
				warn(
					'Invalid handler for event "' + event.name + '": got ' + String(cur),
					vm
				)
			} else if (isUndef(old)) {
				if (isUndef(cur.fns)) {
					cur = on[name] = createFnInvoker(cur, vm)
				}
				if (isTrue(event.once)) {
					cur = on[name] = createOnceHandler(event.name, cur, event.capture)
				}
				add(event.name, cur, event.capture, event.passive, event.params)
			} else if (cur !== old) {
				old.fns = cur
				on[name] = old
			}
		}
		for (name in oldOn) {
			if (isUndef(on[name])) {
				event = normalizeEvent(name)
				remove$$1(event.name, oldOn[name], event.capture)
			}
		}
	}

	/*  */

	function mergeVNodeHook(def, hookKey, hook) {
		if (def instanceof VNode) {
			def = def.data.hook || (def.data.hook = {})
		}
		var invoker
		var oldHook = def[hookKey]

		function wrappedHook() {
			hook.apply(this, arguments)
			// important: remove merged hook to ensure it's called only once
			// and prevent memory leak
			remove(invoker.fns, wrappedHook)
		}

		if (isUndef(oldHook)) {
			// no existing hook
			invoker = createFnInvoker([wrappedHook])
		} else {
			/* istanbul ignore if */
			if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
				// already a merged invoker
				invoker = oldHook
				invoker.fns.push(wrappedHook)
			} else {
				// existing plain hook
				invoker = createFnInvoker([oldHook, wrappedHook])
			}
		}

		invoker.merged = true
		def[hookKey] = invoker
	}

	/*  */

	function extractPropsFromVNodeData(data, Ctor, tag) {
		// we are only extracting raw values here.
		// validation and default values are handled in the child
		// component itself.
		var propOptions = Ctor.options.props
		if (isUndef(propOptions)) {
			return
		}
		var res = {}
		var attrs = data.attrs
		var props = data.props
		if (isDef(attrs) || isDef(props)) {
			for (var key in propOptions) {
				var altKey = hyphenate(key)
				{
					var keyInLowerCase = key.toLowerCase()
					if (
						key !== keyInLowerCase &&
						attrs &&
						hasOwn(attrs, keyInLowerCase)
					) {
						tip(
							'Prop "' +
								keyInLowerCase +
								'" is passed to component ' +
								formatComponentName(tag || Ctor) +
								", but the declared prop name is" +
								' "' +
								key +
								'". ' +
								"Note that HTML attributes are case-insensitive and camelCased " +
								"props need to use their kebab-case equivalents when using in-DOM " +
								'templates. You should probably use "' +
								altKey +
								'" instead of "' +
								key +
								'".'
						)
					}
				}
				checkProp(res, props, key, altKey, true) ||
					checkProp(res, attrs, key, altKey, false)
			}
		}
		return res
	}

	function checkProp(res, hash, key, altKey, preserve) {
		if (isDef(hash)) {
			if (hasOwn(hash, key)) {
				res[key] = hash[key]
				if (!preserve) {
					delete hash[key]
				}
				return true
			} else if (hasOwn(hash, altKey)) {
				res[key] = hash[altKey]
				if (!preserve) {
					delete hash[altKey]
				}
				return true
			}
		}
		return false
	}

	/*  */

	// The template compiler attempts to minimize the need for normalization by
	// statically analyzing the template at compile time.
	//
	// For plain HTML markup, normalization can be completely skipped because the
	// generated render function is guaranteed to return Array<VNode>. There are
	// two cases where extra normalization is needed:

	// 1. When the children contains components - because a functional component
	// may return an Array instead of a single root. In this case, just a simple
	// normalization is needed - if any child is an Array, we flatten the whole
	// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
	// because functional components already normalize their own children.
	function simpleNormalizeChildren(children) {
		for (var i = 0; i < children.length; i++) {
			if (Array.isArray(children[i])) {
				return Array.prototype.concat.apply([], children)
			}
		}
		return children
	}

	// 2. When the children contains constructs that always generated nested Arrays,
	// e.g. <template>, <slot>, v-for, or when the children is provided by user
	// with hand-written render functions / JSX. In such cases a full normalization
	// is needed to cater to all possible types of children values.
	function normalizeChildren(children) {
		return isPrimitive(children)
			? [createTextVNode(children)]
			: Array.isArray(children)
			? normalizeArrayChildren(children)
			: undefined
	}

	function isTextNode(node) {
		return isDef(node) && isDef(node.text) && isFalse(node.isComment)
	}

	function normalizeArrayChildren(children, nestedIndex) {
		var res = []
		var i, c, lastIndex, last
		for (i = 0; i < children.length; i++) {
			c = children[i]
			if (isUndef(c) || typeof c === "boolean") {
				continue
			}
			lastIndex = res.length - 1
			last = res[lastIndex]
			//  nested
			if (Array.isArray(c)) {
				if (c.length > 0) {
					c = normalizeArrayChildren(c, (nestedIndex || "") + "_" + i)
					// merge adjacent text nodes
					if (isTextNode(c[0]) && isTextNode(last)) {
						res[lastIndex] = createTextVNode(last.text + c[0].text)
						c.shift()
					}
					res.push.apply(res, c)
				}
			} else if (isPrimitive(c)) {
				if (isTextNode(last)) {
					// merge adjacent text nodes
					// this is necessary for SSR hydration because text nodes are
					// essentially merged when rendered to HTML strings
					res[lastIndex] = createTextVNode(last.text + c)
				} else if (c !== "") {
					// convert primitive to vnode
					res.push(createTextVNode(c))
				}
			} else {
				if (isTextNode(c) && isTextNode(last)) {
					// merge adjacent text nodes
					res[lastIndex] = createTextVNode(last.text + c.text)
				} else {
					// default key for nested array children (likely generated by v-for)
					if (
						isTrue(children._isVList) &&
						isDef(c.tag) &&
						isUndef(c.key) &&
						isDef(nestedIndex)
					) {
						c.key = "__vlist" + nestedIndex + "_" + i + "__"
					}
					res.push(c)
				}
			}
		}
		return res
	}

	/*  */

	function initProvide(vm) {
		var provide = vm.$options.provide
		if (provide) {
			vm._provided = typeof provide === "function" ? provide.call(vm) : provide
		}
	}

	function initInjections(vm) {
		var result = resolveInject(vm.$options.inject, vm)
		if (result) {
			toggleObserving(false)
			Object.keys(result).forEach(function (key) {
				/* istanbul ignore else */
				{
					defineReactive$$1(vm, key, result[key], function () {
						warn(
							"Avoid mutating an injected value directly since the changes will be " +
								"overwritten whenever the provided component re-renders. " +
								'injection being mutated: "' +
								key +
								'"',
							vm
						)
					})
				}
			})
			toggleObserving(true)
		}
	}

	function resolveInject(inject, vm) {
		if (inject) {
			// inject is :any because flow is not smart enough to figure out cached
			var result = Object.create(null)
			var keys = hasSymbol ? Reflect.ownKeys(inject) : Object.keys(inject)

			for (var i = 0; i < keys.length; i++) {
				var key = keys[i]
				// #6574 in case the inject object is observed...
				if (key === "__ob__") {
					continue
				}
				var provideKey = inject[key].from
				var source = vm
				while (source) {
					if (source._provided && hasOwn(source._provided, provideKey)) {
						result[key] = source._provided[provideKey]
						break
					}
					source = source.$parent
				}
				if (!source) {
					if ("default" in inject[key]) {
						var provideDefault = inject[key].default
						result[key] =
							typeof provideDefault === "function"
								? provideDefault.call(vm)
								: provideDefault
					} else {
						warn('Injection "' + key + '" not found', vm)
					}
				}
			}
			return result
		}
	}

	/*  */

	/**
	 * Runtime helper for resolving raw children VNodes into a slot object.
	 */
	function resolveSlots(children, context) {
		if (!children || !children.length) {
			return {}
		}
		var slots = {}
		for (var i = 0, l = children.length; i < l; i++) {
			var child = children[i]
			var data = child.data
			// remove slot attribute if the node is resolved as a Vue slot node
			if (data && data.attrs && data.attrs.slot) {
				delete data.attrs.slot
			}
			// named slots should only be respected if the vnode was rendered in the
			// same context.
			if (
				(child.context === context || child.fnContext === context) &&
				data &&
				data.slot != null
			) {
				var name = data.slot
				var slot = slots[name] || (slots[name] = [])
				if (child.tag === "template") {
					slot.push.apply(slot, child.children || [])
				} else {
					slot.push(child)
				}
			} else {
				;(slots.default || (slots.default = [])).push(child)
			}
		}
		// ignore slots that contains only whitespace
		for (var name$1 in slots) {
			if (slots[name$1].every(isWhitespace)) {
				delete slots[name$1]
			}
		}
		return slots
	}

	function isWhitespace(node) {
		return (node.isComment && !node.asyncFactory) || node.text === " "
	}

	/*  */

	function normalizeScopedSlots(slots, normalSlots, prevSlots) {
		var res
		var hasNormalSlots = Object.keys(normalSlots).length > 0
		var isStable = slots ? !!slots.$stable : !hasNormalSlots
		var key = slots && slots.$key
		if (!slots) {
			res = {}
		} else if (slots._normalized) {
			// fast path 1: child component re-render only, parent did not change
			return slots._normalized
		} else if (
			isStable &&
			prevSlots &&
			prevSlots !== emptyObject &&
			key === prevSlots.$key &&
			!hasNormalSlots &&
			!prevSlots.$hasNormal
		) {
			// fast path 2: stable scoped slots w/ no normal slots to proxy,
			// only need to normalize once
			return prevSlots
		} else {
			res = {}
			for (var key$1 in slots) {
				if (slots[key$1] && key$1[0] !== "$") {
					res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1])
				}
			}
		}
		// expose normal slots on scopedSlots
		for (var key$2 in normalSlots) {
			if (!(key$2 in res)) {
				res[key$2] = proxyNormalSlot(normalSlots, key$2)
			}
		}
		// avoriaz seems to mock a non-extensible $scopedSlots object
		// and when that is passed down this would cause an error
		if (slots && Object.isExtensible(slots)) {
			slots._normalized = res
		}
		def(res, "$stable", isStable)
		def(res, "$key", key)
		def(res, "$hasNormal", hasNormalSlots)
		return res
	}

	function normalizeScopedSlot(normalSlots, key, fn) {
		var normalized = function () {
			var res = arguments.length ? fn.apply(null, arguments) : fn({})
			res =
				res && typeof res === "object" && !Array.isArray(res)
					? [res] // single vnode
					: normalizeChildren(res)
			return res &&
				(res.length === 0 || (res.length === 1 && res[0].isComment)) // #9658
				? undefined
				: res
		}
		// this is a slot using the new v-slot syntax without scope. although it is
		// compiled as a scoped slot, render fn users would expect it to be present
		// on this.$slots because the usage is semantically a normal slot.
		if (fn.proxy) {
			Object.defineProperty(normalSlots, key, {
				get: normalized,
				enumerable: true,
				configurable: true,
			})
		}
		return normalized
	}

	function proxyNormalSlot(slots, key) {
		return function () {
			return slots[key]
		}
	}

	/*  */

	/**
	 * Runtime helper for rendering v-for lists.
	 */
	function renderList(val, render) {
		var ret, i, l, keys, key
		if (Array.isArray(val) || typeof val === "string") {
			ret = new Array(val.length)
			for (i = 0, l = val.length; i < l; i++) {
				ret[i] = render(val[i], i)
			}
		} else if (typeof val === "number") {
			ret = new Array(val)
			for (i = 0; i < val; i++) {
				ret[i] = render(i + 1, i)
			}
		} else if (isObject(val)) {
			if (hasSymbol && val[Symbol.iterator]) {
				ret = []
				var iterator = val[Symbol.iterator]()
				var result = iterator.next()
				while (!result.done) {
					ret.push(render(result.value, ret.length))
					result = iterator.next()
				}
			} else {
				keys = Object.keys(val)
				ret = new Array(keys.length)
				for (i = 0, l = keys.length; i < l; i++) {
					key = keys[i]
					ret[i] = render(val[key], key, i)
				}
			}
		}
		if (!isDef(ret)) {
			ret = []
		}
		ret._isVList = true
		return ret
	}

	/*  */

	/**
	 * Runtime helper for rendering <slot>
	 */
	function renderSlot(name, fallback, props, bindObject) {
		var scopedSlotFn = this.$scopedSlots[name]
		var nodes
		if (scopedSlotFn) {
			// scoped slot
			props = props || {}
			if (bindObject) {
				if (!isObject(bindObject)) {
					warn("slot v-bind without argument expects an Object", this)
				}
				props = extend(extend({}, bindObject), props)
			}
			nodes = scopedSlotFn(props) || fallback
		} else {
			nodes = this.$slots[name] || fallback
		}

		var target = props && props.slot
		if (target) {
			return this.$createElement("template", { slot: target }, nodes)
		} else {
			return nodes
		}
	}

	/*  */

	/**
	 * Runtime helper for resolving filters
	 */
	function resolveFilter(id) {
		return resolveAsset(this.$options, "filters", id, true) || identity
	}

	/*  */

	function isKeyNotMatch(expect, actual) {
		if (Array.isArray(expect)) {
			return expect.indexOf(actual) === -1
		} else {
			return expect !== actual
		}
	}

	/**
	 * Runtime helper for checking keyCodes from config.
	 * exposed as Vue.prototype._k
	 * passing in eventKeyName as last argument separately for backwards compat
	 */
	function checkKeyCodes(
		eventKeyCode,
		key,
		builtInKeyCode,
		eventKeyName,
		builtInKeyName
	) {
		var mappedKeyCode = config.keyCodes[key] || builtInKeyCode
		if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
			return isKeyNotMatch(builtInKeyName, eventKeyName)
		} else if (mappedKeyCode) {
			return isKeyNotMatch(mappedKeyCode, eventKeyCode)
		} else if (eventKeyName) {
			return hyphenate(eventKeyName) !== key
		}
	}

	/*  */

	/**
	 * Runtime helper for merging v-bind="object" into a VNode's data.
	 */
	function bindObjectProps(data, tag, value, asProp, isSync) {
		if (value) {
			if (!isObject(value)) {
				warn("v-bind without argument expects an Object or Array value", this)
			} else {
				if (Array.isArray(value)) {
					value = toObject(value)
				}
				var hash
				var loop = function (key) {
					if (key === "class" || key === "style" || isReservedAttribute(key)) {
						hash = data
					} else {
						var type = data.attrs && data.attrs.type
						hash =
							asProp || config.mustUseProp(tag, type, key)
								? data.domProps || (data.domProps = {})
								: data.attrs || (data.attrs = {})
					}
					var camelizedKey = camelize(key)
					var hyphenatedKey = hyphenate(key)
					if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {
						hash[key] = value[key]

						if (isSync) {
							var on = data.on || (data.on = {})
							on["update:" + key] = function ($event) {
								value[key] = $event
							}
						}
					}
				}

				for (var key in value) loop(key)
			}
		}
		return data
	}

	/*  */

	/**
	 * Runtime helper for rendering static trees.
	 */
	function renderStatic(index, isInFor) {
		var cached = this._staticTrees || (this._staticTrees = [])
		var tree = cached[index]
		// if has already-rendered static tree and not inside v-for,
		// we can reuse the same tree.
		if (tree && !isInFor) {
			return tree
		}
		// otherwise, render a fresh tree.
		tree = cached[index] = this.$options.staticRenderFns[index].call(
			this._renderProxy,
			null,
			this // for render fns generated for functional component templates
		)
		markStatic(tree, "__static__" + index, false)
		return tree
	}

	/**
	 * Runtime helper for v-once.
	 * Effectively it means marking the node as static with a unique key.
	 */
	function markOnce(tree, index, key) {
		markStatic(tree, "__once__" + index + (key ? "_" + key : ""), true)
		return tree
	}

	function markStatic(tree, key, isOnce) {
		if (Array.isArray(tree)) {
			for (var i = 0; i < tree.length; i++) {
				if (tree[i] && typeof tree[i] !== "string") {
					markStaticNode(tree[i], key + "_" + i, isOnce)
				}
			}
		} else {
			markStaticNode(tree, key, isOnce)
		}
	}

	function markStaticNode(node, key, isOnce) {
		node.isStatic = true
		node.key = key
		node.isOnce = isOnce
	}

	/*  */

	function bindObjectListeners(data, value) {
		if (value) {
			if (!isPlainObject(value)) {
				warn("v-on without argument expects an Object value", this)
			} else {
				var on = (data.on = data.on ? extend({}, data.on) : {})
				for (var key in value) {
					var existing = on[key]
					var ours = value[key]
					on[key] = existing ? [].concat(existing, ours) : ours
				}
			}
		}
		return data
	}

	/*  */

	function resolveScopedSlots(
		fns, // see flow/vnode
		res,
		// the following are added in 2.6
		hasDynamicKeys,
		contentHashKey
	) {
		res = res || { $stable: !hasDynamicKeys }
		for (var i = 0; i < fns.length; i++) {
			var slot = fns[i]
			if (Array.isArray(slot)) {
				resolveScopedSlots(slot, res, hasDynamicKeys)
			} else if (slot) {
				// marker for reverse proxying v-slot without scope on this.$slots
				if (slot.proxy) {
					slot.fn.proxy = true
				}
				res[slot.key] = slot.fn
			}
		}
		if (contentHashKey) {
			res.$key = contentHashKey
		}
		return res
	}

	/*  */

	function bindDynamicKeys(baseObj, values) {
		for (var i = 0; i < values.length; i += 2) {
			var key = values[i]
			if (typeof key === "string" && key) {
				baseObj[values[i]] = values[i + 1]
			} else if (key !== "" && key !== null) {
				// null is a special value for explicitly removing a binding
				warn(
					"Invalid value for dynamic directive argument (expected string or null): " +
						key,
					this
				)
			}
		}
		return baseObj
	}

	// helper to dynamically append modifier runtime markers to event names.
	// ensure only append when value is already string, otherwise it will be cast
	// to string and cause the type check to miss.
	function prependModifier(value, symbol) {
		return typeof value === "string" ? symbol + value : value
	}

	/*  */

	function installRenderHelpers(target) {
		target._o = markOnce
		target._n = toNumber
		target._s = toString
		target._l = renderList
		target._t = renderSlot
		target._q = looseEqual
		target._i = looseIndexOf
		target._m = renderStatic
		target._f = resolveFilter
		target._k = checkKeyCodes
		target._b = bindObjectProps
		target._v = createTextVNode
		target._e = createEmptyVNode
		target._u = resolveScopedSlots
		target._g = bindObjectListeners
		target._d = bindDynamicKeys
		target._p = prependModifier
	}

	/*  */

	function FunctionalRenderContext(data, props, children, parent, Ctor) {
		var this$1 = this

		var options = Ctor.options
		// ensure the createElement function in functional components
		// gets a unique context - this is necessary for correct named slot check
		var contextVm
		if (hasOwn(parent, "_uid")) {
			contextVm = Object.create(parent)
			// $flow-disable-line
			contextVm._original = parent
		} else {
			// the context vm passed in is a functional context as well.
			// in this case we want to make sure we are able to get a hold to the
			// real context instance.
			contextVm = parent
			// $flow-disable-line
			parent = parent._original
		}
		var isCompiled = isTrue(options._compiled)
		var needNormalization = !isCompiled

		this.data = data
		this.props = props
		this.children = children
		this.parent = parent
		this.listeners = data.on || emptyObject
		this.injections = resolveInject(options.inject, parent)
		this.slots = function () {
			if (!this$1.$slots) {
				normalizeScopedSlots(
					data.scopedSlots,
					(this$1.$slots = resolveSlots(children, parent))
				)
			}
			return this$1.$slots
		}

		Object.defineProperty(this, "scopedSlots", {
			enumerable: true,
			get: function get() {
				return normalizeScopedSlots(data.scopedSlots, this.slots())
			},
		})

		// support for compiled functional template
		if (isCompiled) {
			// exposing $options for renderStatic()
			this.$options = options
			// pre-resolve slots for renderSlot()
			this.$slots = this.slots()
			this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots)
		}

		if (options._scopeId) {
			this._c = function (a, b, c, d) {
				var vnode = createElement(contextVm, a, b, c, d, needNormalization)
				if (vnode && !Array.isArray(vnode)) {
					vnode.fnScopeId = options._scopeId
					vnode.fnContext = parent
				}
				return vnode
			}
		} else {
			this._c = function (a, b, c, d) {
				return createElement(contextVm, a, b, c, d, needNormalization)
			}
		}
	}

	installRenderHelpers(FunctionalRenderContext.prototype)

	function createFunctionalComponent(
		Ctor,
		propsData,
		data,
		contextVm,
		children
	) {
		var options = Ctor.options
		var props = {}
		var propOptions = options.props
		if (isDef(propOptions)) {
			for (var key in propOptions) {
				props[key] = validateProp(key, propOptions, propsData || emptyObject)
			}
		} else {
			if (isDef(data.attrs)) {
				mergeProps(props, data.attrs)
			}
			if (isDef(data.props)) {
				mergeProps(props, data.props)
			}
		}

		var renderContext = new FunctionalRenderContext(
			data,
			props,
			children,
			contextVm,
			Ctor
		)

		var vnode = options.render.call(null, renderContext._c, renderContext)

		if (vnode instanceof VNode) {
			return cloneAndMarkFunctionalResult(
				vnode,
				data,
				renderContext.parent,
				options,
				renderContext
			)
		} else if (Array.isArray(vnode)) {
			var vnodes = normalizeChildren(vnode) || []
			var res = new Array(vnodes.length)
			for (var i = 0; i < vnodes.length; i++) {
				res[i] = cloneAndMarkFunctionalResult(
					vnodes[i],
					data,
					renderContext.parent,
					options,
					renderContext
				)
			}
			return res
		}
	}

	function cloneAndMarkFunctionalResult(
		vnode,
		data,
		contextVm,
		options,
		renderContext
	) {
		// #7817 clone node before setting fnContext, otherwise if the node is reused
		// (e.g. it was from a cached normal slot) the fnContext causes named slots
		// that should not be matched to match.
		var clone = cloneVNode(vnode)
		clone.fnContext = contextVm
		clone.fnOptions = options
		{
			;(clone.devtoolsMeta =
				clone.devtoolsMeta || {}).renderContext = renderContext
		}
		if (data.slot) {
			;(clone.data || (clone.data = {})).slot = data.slot
		}
		return clone
	}

	function mergeProps(to, from) {
		for (var key in from) {
			to[camelize(key)] = from[key]
		}
	}

	/*  */

	/*  */

	/*  */

	/*  */

	// inline hooks to be invoked on component VNodes during patch
	var componentVNodeHooks = {
		init: function init(vnode, hydrating) {
			if (
				vnode.componentInstance &&
				!vnode.componentInstance._isDestroyed &&
				vnode.data.keepAlive
			) {
				// kept-alive components, treat as a patch
				var mountedNode = vnode // work around flow
				componentVNodeHooks.prepatch(mountedNode, mountedNode)
			} else {
				var child = (vnode.componentInstance = createComponentInstanceForVnode(
					vnode,
					activeInstance
				))
				child.$mount(hydrating ? vnode.elm : undefined, hydrating)
			}
		},

		prepatch: function prepatch(oldVnode, vnode) {
			var options = vnode.componentOptions
			var child = (vnode.componentInstance = oldVnode.componentInstance)
			updateChildComponent(
				child,
				options.propsData, // updated props
				options.listeners, // updated listeners
				vnode, // new parent vnode
				options.children // new children
			)
		},

		insert: function insert(vnode) {
			var context = vnode.context
			var componentInstance = vnode.componentInstance
			if (!componentInstance._isMounted) {
				componentInstance._isMounted = true
				callHook(componentInstance, "mounted")
			}
			if (vnode.data.keepAlive) {
				if (context._isMounted) {
					// vue-router#1212
					// During updates, a kept-alive component's child components may
					// change, so directly walking the tree here may call activated hooks
					// on incorrect children. Instead we push them into a queue which will
					// be processed after the whole patch process ended.
					queueActivatedComponent(componentInstance)
				} else {
					activateChildComponent(componentInstance, true /* direct */)
				}
			}
		},

		destroy: function destroy(vnode) {
			var componentInstance = vnode.componentInstance
			if (!componentInstance._isDestroyed) {
				if (!vnode.data.keepAlive) {
					componentInstance.$destroy()
				} else {
					deactivateChildComponent(componentInstance, true /* direct */)
				}
			}
		},
	}

	var hooksToMerge = Object.keys(componentVNodeHooks)

	function createComponent(Ctor, data, context, children, tag) {
		if (isUndef(Ctor)) {
			return
		}

		var baseCtor = context.$options._base

		// plain options object: turn it into a constructor
		if (isObject(Ctor)) {
			Ctor = baseCtor.extend(Ctor)
		}

		// if at this stage it's not a constructor or an async component factory,
		// reject.
		if (typeof Ctor !== "function") {
			{
				warn("Invalid Component definition: " + String(Ctor), context)
			}
			return
		}

		// async component
		var asyncFactory
		if (isUndef(Ctor.cid)) {
			asyncFactory = Ctor
			Ctor = resolveAsyncComponent(asyncFactory, baseCtor)
			if (Ctor === undefined) {
				// return a placeholder node for async component, which is rendered
				// as a comment node but preserves all the raw information for the node.
				// the information will be used for async server-rendering and hydration.
				return createAsyncPlaceholder(
					asyncFactory,
					data,
					context,
					children,
					tag
				)
			}
		}

		data = data || {}

		// resolve constructor options in case global mixins are applied after
		// component constructor creation
		resolveConstructorOptions(Ctor)

		// transform component v-model data into props & events
		if (isDef(data.model)) {
			transformModel(Ctor.options, data)
		}

		// extract props
		var propsData = extractPropsFromVNodeData(data, Ctor, tag)

		// functional component
		if (isTrue(Ctor.options.functional)) {
			return createFunctionalComponent(Ctor, propsData, data, context, children)
		}

		// extract listeners, since these needs to be treated as
		// child component listeners instead of DOM listeners
		var listeners = data.on
		// replace with listeners with .native modifier
		// so it gets processed during parent component patch.
		data.on = data.nativeOn

		if (isTrue(Ctor.options.abstract)) {
			// abstract components do not keep anything
			// other than props & listeners & slot

			// work around flow
			var slot = data.slot
			data = {}
			if (slot) {
				data.slot = slot
			}
		}

		// install component management hooks onto the placeholder node
		installComponentHooks(data)

		// return a placeholder vnode
		var name = Ctor.options.name || tag
		var vnode = new VNode(
			"vue-component-" + Ctor.cid + (name ? "-" + name : ""),
			data,
			undefined,
			undefined,
			undefined,
			context,
			{
				Ctor: Ctor,
				propsData: propsData,
				listeners: listeners,
				tag: tag,
				children: children,
			},
			asyncFactory
		)

		return vnode
	}

	function createComponentInstanceForVnode(
		vnode, // we know it's MountedComponentVNode but flow doesn't
		parent // activeInstance in lifecycle state
	) {
		var options = {
			_isComponent: true,
			_parentVnode: vnode,
			parent: parent,
		}
		// check inline-template render functions
		var inlineTemplate = vnode.data.inlineTemplate
		if (isDef(inlineTemplate)) {
			options.render = inlineTemplate.render
			options.staticRenderFns = inlineTemplate.staticRenderFns
		}
		return new vnode.componentOptions.Ctor(options)
	}

	function installComponentHooks(data) {
		var hooks = data.hook || (data.hook = {})
		for (var i = 0; i < hooksToMerge.length; i++) {
			var key = hooksToMerge[i]
			var existing = hooks[key]
			var toMerge = componentVNodeHooks[key]
			if (existing !== toMerge && !(existing && existing._merged)) {
				hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge
			}
		}
	}

	function mergeHook$1(f1, f2) {
		var merged = function (a, b) {
			// flow complains about extra args which is why we use any
			f1(a, b)
			f2(a, b)
		}
		merged._merged = true
		return merged
	}

	// transform component v-model info (value and callback) into
	// prop and event handler respectively.
	function transformModel(options, data) {
		var prop = (options.model && options.model.prop) || "value"
		var event = (options.model && options.model.event) || "input"
		;(data.attrs || (data.attrs = {}))[prop] = data.model.value
		var on = data.on || (data.on = {})
		var existing = on[event]
		var callback = data.model.callback
		if (isDef(existing)) {
			if (
				Array.isArray(existing)
					? existing.indexOf(callback) === -1
					: existing !== callback
			) {
				on[event] = [callback].concat(existing)
			}
		} else {
			on[event] = callback
		}
	}

	/*  */

	var SIMPLE_NORMALIZE = 1
	var ALWAYS_NORMALIZE = 2

	// wrapper function for providing a more flexible interface
	// without getting yelled at by flow
	function createElement(
		context,
		tag,
		data,
		children,
		normalizationType,
		alwaysNormalize
	) {
		if (Array.isArray(data) || isPrimitive(data)) {
			normalizationType = children
			children = data
			data = undefined
		}
		if (isTrue(alwaysNormalize)) {
			normalizationType = ALWAYS_NORMALIZE
		}
		return _createElement(context, tag, data, children, normalizationType)
	}

	function _createElement(context, tag, data, children, normalizationType) {
		if (isDef(data) && isDef(data.__ob__)) {
			warn(
				"Avoid using observed data object as vnode data: " +
					JSON.stringify(data) +
					"\n" +
					"Always create fresh vnode data objects in each render!",
				context
			)
			return createEmptyVNode()
		}
		// object syntax in v-bind
		if (isDef(data) && isDef(data.is)) {
			tag = data.is
		}
		if (!tag) {
			// in case of component :is set to falsy value
			return createEmptyVNode()
		}
		// warn against non-primitive key
		if (isDef(data) && isDef(data.key) && !isPrimitive(data.key)) {
			{
				warn(
					"Avoid using non-primitive value as key, " +
						"use string/number value instead.",
					context
				)
			}
		}
		// support single function children as default scoped slot
		if (Array.isArray(children) && typeof children[0] === "function") {
			data = data || {}
			data.scopedSlots = { default: children[0] }
			children.length = 0
		}
		if (normalizationType === ALWAYS_NORMALIZE) {
			children = normalizeChildren(children)
		} else if (normalizationType === SIMPLE_NORMALIZE) {
			children = simpleNormalizeChildren(children)
		}
		var vnode, ns
		if (typeof tag === "string") {
			var Ctor
			ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag)
			if (config.isReservedTag(tag)) {
				// platform built-in elements
				if (isDef(data) && isDef(data.nativeOn)) {
					warn(
						"The .native modifier for v-on is only valid on components but it was used on <" +
							tag +
							">.",
						context
					)
				}
				vnode = new VNode(
					config.parsePlatformTagName(tag),
					data,
					children,
					undefined,
					undefined,
					context
				)
			} else if (
				(!data || !data.pre) &&
				isDef((Ctor = resolveAsset(context.$options, "components", tag)))
			) {
				// component
				vnode = createComponent(Ctor, data, context, children, tag)
			} else {
				// unknown or unlisted namespaced elements
				// check at runtime because it may get assigned a namespace when its
				// parent normalizes children
				vnode = new VNode(tag, data, children, undefined, undefined, context)
			}
		} else {
			// direct component options / constructor
			vnode = createComponent(tag, data, context, children)
		}
		if (Array.isArray(vnode)) {
			return vnode
		} else if (isDef(vnode)) {
			if (isDef(ns)) {
				applyNS(vnode, ns)
			}
			if (isDef(data)) {
				registerDeepBindings(data)
			}
			return vnode
		} else {
			return createEmptyVNode()
		}
	}

	function applyNS(vnode, ns, force) {
		vnode.ns = ns
		if (vnode.tag === "foreignObject") {
			// use default namespace inside foreignObject
			ns = undefined
			force = true
		}
		if (isDef(vnode.children)) {
			for (var i = 0, l = vnode.children.length; i < l; i++) {
				var child = vnode.children[i]
				if (
					isDef(child.tag) &&
					(isUndef(child.ns) || (isTrue(force) && child.tag !== "svg"))
				) {
					applyNS(child, ns, force)
				}
			}
		}
	}

	// ref #5318
	// necessary to ensure parent re-render when deep bindings like :style and
	// :class are used on slot nodes
	function registerDeepBindings(data) {
		if (isObject(data.style)) {
			traverse(data.style)
		}
		if (isObject(data.class)) {
			traverse(data.class)
		}
	}

	/*  */

	function initRender(vm) {
		vm._vnode = null // the root of the child tree
		vm._staticTrees = null // v-once cached trees
		var options = vm.$options
		var parentVnode = (vm.$vnode = options._parentVnode) // the placeholder node in parent tree
		var renderContext = parentVnode && parentVnode.context
		vm.$slots = resolveSlots(options._renderChildren, renderContext)
		vm.$scopedSlots = emptyObject
		// bind the createElement fn to this instance
		// so that we get proper render context inside it.
		// args order: tag, data, children, normalizationType, alwaysNormalize
		// internal version is used by render functions compiled from templates
		vm._c = function (a, b, c, d) {
			return createElement(vm, a, b, c, d, false)
		}
		// normalization is always applied for the public version, used in
		// user-written render functions.
		vm.$createElement = function (a, b, c, d) {
			return createElement(vm, a, b, c, d, true)
		}

		// $attrs & $listeners are exposed for easier HOC creation.
		// they need to be reactive so that HOCs using them are always updated
		var parentData = parentVnode && parentVnode.data

		/* istanbul ignore else */
		{
			defineReactive$$1(
				vm,
				"$attrs",
				(parentData && parentData.attrs) || emptyObject,
				function () {
					!isUpdatingChildComponent && warn("$attrs is readonly.", vm)
				},
				true
			)
			defineReactive$$1(
				vm,
				"$listeners",
				options._parentListeners || emptyObject,
				function () {
					!isUpdatingChildComponent && warn("$listeners is readonly.", vm)
				},
				true
			)
		}
	}

	var currentRenderingInstance = null

	function renderMixin(Vue) {
		// install runtime convenience helpers
		installRenderHelpers(Vue.prototype)

		Vue.prototype.$nextTick = function (fn) {
			return nextTick(fn, this)
		}

		Vue.prototype._render = function () {
			var vm = this
			var ref = vm.$options
			var render = ref.render
			var _parentVnode = ref._parentVnode

			if (_parentVnode) {
				vm.$scopedSlots = normalizeScopedSlots(
					_parentVnode.data.scopedSlots,
					vm.$slots,
					vm.$scopedSlots
				)
			}

			// set parent vnode. this allows render functions to have access
			// to the data on the placeholder node.
			vm.$vnode = _parentVnode
			// render self
			var vnode
			try {
				// There's no need to maintain a stack because all render fns are called
				// separately from one another. Nested component's render fns are called
				// when parent component is patched.
				currentRenderingInstance = vm
				vnode = render.call(vm._renderProxy, vm.$createElement)
			} catch (e) {
				handleError(e, vm, "render")
				// return error render result,
				// or previous vnode to prevent render error causing blank component
				/* istanbul ignore else */
				if (vm.$options.renderError) {
					try {
						vnode = vm.$options.renderError.call(
							vm._renderProxy,
							vm.$createElement,
							e
						)
					} catch (e) {
						handleError(e, vm, "renderError")
						vnode = vm._vnode
					}
				} else {
					vnode = vm._vnode
				}
			} finally {
				currentRenderingInstance = null
			}
			// if the returned array contains only a single node, allow it
			if (Array.isArray(vnode) && vnode.length === 1) {
				vnode = vnode[0]
			}
			// return empty vnode in case the render function errored out
			if (!(vnode instanceof VNode)) {
				if (Array.isArray(vnode)) {
					warn(
						"Multiple root nodes returned from render function. Render function " +
							"should return a single root node.",
						vm
					)
				}
				vnode = createEmptyVNode()
			}
			// set parent
			vnode.parent = _parentVnode
			return vnode
		}
	}

	/*  */

	function ensureCtor(comp, base) {
		if (
			comp.__esModule ||
			(hasSymbol && comp[Symbol.toStringTag] === "Module")
		) {
			comp = comp.default
		}
		return isObject(comp) ? base.extend(comp) : comp
	}

	function createAsyncPlaceholder(factory, data, context, children, tag) {
		var node = createEmptyVNode()
		node.asyncFactory = factory
		node.asyncMeta = {
			data: data,
			context: context,
			children: children,
			tag: tag,
		}
		return node
	}

	function resolveAsyncComponent(factory, baseCtor) {
		if (isTrue(factory.error) && isDef(factory.errorComp)) {
			return factory.errorComp
		}

		if (isDef(factory.resolved)) {
			return factory.resolved
		}

		var owner = currentRenderingInstance
		if (
			owner &&
			isDef(factory.owners) &&
			factory.owners.indexOf(owner) === -1
		) {
			// already pending
			factory.owners.push(owner)
		}

		if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
			return factory.loadingComp
		}

		if (owner && !isDef(factory.owners)) {
			var owners = (factory.owners = [owner])
			var sync = true
			var timerLoading = null
			var timerTimeout = null

			owner.$on("hook:destroyed", function () {
				return remove(owners, owner)
			})

			var forceRender = function (renderCompleted) {
				for (var i = 0, l = owners.length; i < l; i++) {
					owners[i].$forceUpdate()
				}

				if (renderCompleted) {
					owners.length = 0
					if (timerLoading !== null) {
						clearTimeout(timerLoading)
						timerLoading = null
					}
					if (timerTimeout !== null) {
						clearTimeout(timerTimeout)
						timerTimeout = null
					}
				}
			}

			var resolve = once(function (res) {
				// cache resolved
				factory.resolved = ensureCtor(res, baseCtor)
				// invoke callbacks only if this is not a synchronous resolve
				// (async resolves are shimmed as synchronous during SSR)
				if (!sync) {
					forceRender(true)
				} else {
					owners.length = 0
				}
			})

			var reject = once(function (reason) {
				warn(
					"Failed to resolve async component: " +
						String(factory) +
						(reason ? "\nReason: " + reason : "")
				)
				if (isDef(factory.errorComp)) {
					factory.error = true
					forceRender(true)
				}
			})

			var res = factory(resolve, reject)

			if (isObject(res)) {
				if (isPromise(res)) {
					// () => Promise
					if (isUndef(factory.resolved)) {
						res.then(resolve, reject)
					}
				} else if (isPromise(res.component)) {
					res.component.then(resolve, reject)

					if (isDef(res.error)) {
						factory.errorComp = ensureCtor(res.error, baseCtor)
					}

					if (isDef(res.loading)) {
						factory.loadingComp = ensureCtor(res.loading, baseCtor)
						if (res.delay === 0) {
							factory.loading = true
						} else {
							timerLoading = setTimeout(function () {
								timerLoading = null
								if (isUndef(factory.resolved) && isUndef(factory.error)) {
									factory.loading = true
									forceRender(false)
								}
							}, res.delay || 200)
						}
					}

					if (isDef(res.timeout)) {
						timerTimeout = setTimeout(function () {
							timerTimeout = null
							if (isUndef(factory.resolved)) {
								reject("timeout (" + res.timeout + "ms)")
							}
						}, res.timeout)
					}
				}
			}

			sync = false
			// return in case resolved synchronously
			return factory.loading ? factory.loadingComp : factory.resolved
		}
	}

	/*  */

	function isAsyncPlaceholder(node) {
		return node.isComment && node.asyncFactory
	}

	/*  */

	function getFirstComponentChild(children) {
		if (Array.isArray(children)) {
			for (var i = 0; i < children.length; i++) {
				var c = children[i]
				if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
					return c
				}
			}
		}
	}

	/*  */

	/*  */

	function initEvents(vm) {
		vm._events = Object.create(null)
		vm._hasHookEvent = false
		// init parent attached events
		var listeners = vm.$options._parentListeners
		if (listeners) {
			updateComponentListeners(vm, listeners)
		}
	}

	var target

	function add(event, fn) {
		target.$on(event, fn)
	}

	function remove$1(event, fn) {
		target.$off(event, fn)
	}

	function createOnceHandler(event, fn) {
		var _target = target
		return function onceHandler() {
			var res = fn.apply(null, arguments)
			if (res !== null) {
				_target.$off(event, onceHandler)
			}
		}
	}

	function updateComponentListeners(vm, listeners, oldListeners) {
		target = vm
		updateListeners(
			listeners,
			oldListeners || {},
			add,
			remove$1,
			createOnceHandler,
			vm
		)
		target = undefined
	}

	function eventsMixin(Vue) {
		var hookRE = /^hook:/
		Vue.prototype.$on = function (event, fn) {
			var vm = this
			if (Array.isArray(event)) {
				for (var i = 0, l = event.length; i < l; i++) {
					vm.$on(event[i], fn)
				}
			} else {
				;(vm._events[event] || (vm._events[event] = [])).push(fn)
				// optimize hook:event cost by using a boolean flag marked at registration
				// instead of a hash lookup
				if (hookRE.test(event)) {
					vm._hasHookEvent = true
				}
			}
			return vm
		}

		Vue.prototype.$once = function (event, fn) {
			var vm = this
			function on() {
				vm.$off(event, on)
				fn.apply(vm, arguments)
			}
			on.fn = fn
			vm.$on(event, on)
			return vm
		}

		Vue.prototype.$off = function (event, fn) {
			var vm = this
			// all
			if (!arguments.length) {
				vm._events = Object.create(null)
				return vm
			}
			// array of events
			if (Array.isArray(event)) {
				for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {
					vm.$off(event[i$1], fn)
				}
				return vm
			}
			// specific event
			var cbs = vm._events[event]
			if (!cbs) {
				return vm
			}
			if (!fn) {
				vm._events[event] = null
				return vm
			}
			// specific handler
			var cb
			var i = cbs.length
			while (i--) {
				cb = cbs[i]
				if (cb === fn || cb.fn === fn) {
					cbs.splice(i, 1)
					break
				}
			}
			return vm
		}

		Vue.prototype.$emit = function (event) {
			var vm = this
			{
				var lowerCaseEvent = event.toLowerCase()
				if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
					tip(
						'Event "' +
							lowerCaseEvent +
							'" is emitted in component ' +
							formatComponentName(vm) +
							' but the handler is registered for "' +
							event +
							'". ' +
							"Note that HTML attributes are case-insensitive and you cannot use " +
							"v-on to listen to camelCase events when using in-DOM templates. " +
							'You should probably use "' +
							hyphenate(event) +
							'" instead of "' +
							event +
							'".'
					)
				}
			}
			var cbs = vm._events[event]
			if (cbs) {
				cbs = cbs.length > 1 ? toArray(cbs) : cbs
				var args = toArray(arguments, 1)
				var info = 'event handler for "' + event + '"'
				for (var i = 0, l = cbs.length; i < l; i++) {
					invokeWithErrorHandling(cbs[i], vm, args, vm, info)
				}
			}
			return vm
		}
	}

	/*  */

	var activeInstance = null
	var isUpdatingChildComponent = false

	function setActiveInstance(vm) {
		var prevActiveInstance = activeInstance
		activeInstance = vm
		return function () {
			activeInstance = prevActiveInstance
		}
	}

	function initLifecycle(vm) {
		var options = vm.$options

		// locate first non-abstract parent
		var parent = options.parent
		if (parent && !options.abstract) {
			while (parent.$options.abstract && parent.$parent) {
				parent = parent.$parent
			}
			parent.$children.push(vm)
		}

		vm.$parent = parent
		vm.$root = parent ? parent.$root : vm

		vm.$children = []
		vm.$refs = {}

		vm._watcher = null
		vm._inactive = null
		vm._directInactive = false
		vm._isMounted = false
		vm._isDestroyed = false
		vm._isBeingDestroyed = false
	}

	function lifecycleMixin(Vue) {
		Vue.prototype._update = function (vnode, hydrating) {
			var vm = this
			var prevEl = vm.$el
			var prevVnode = vm._vnode
			var restoreActiveInstance = setActiveInstance(vm)
			vm._vnode = vnode
			// Vue.prototype.__patch__ is injected in entry points
			// based on the rendering backend used.
			if (!prevVnode) {
				// initial render
				vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */)
			} else {
				// updates
				vm.$el = vm.__patch__(prevVnode, vnode)
			}
			restoreActiveInstance()
			// update __vue__ reference
			if (prevEl) {
				prevEl.__vue__ = null
			}
			if (vm.$el) {
				vm.$el.__vue__ = vm
			}
			// if parent is an HOC, update its $el as well
			if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
				vm.$parent.$el = vm.$el
			}
			// updated hook is called by the scheduler to ensure that children are
			// updated in a parent's updated hook.
		}

		Vue.prototype.$forceUpdate = function () {
			var vm = this
			if (vm._watcher) {
				vm._watcher.update()
			}
		}

		Vue.prototype.$destroy = function () {
			var vm = this
			if (vm._isBeingDestroyed) {
				return
			}
			callHook(vm, "beforeDestroy")
			vm._isBeingDestroyed = true
			// remove self from parent
			var parent = vm.$parent
			if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
				remove(parent.$children, vm)
			}
			// teardown watchers
			if (vm._watcher) {
				vm._watcher.teardown()
			}
			var i = vm._watchers.length
			while (i--) {
				vm._watchers[i].teardown()
			}
			// remove reference from data ob
			// frozen object may not have observer.
			if (vm._data.__ob__) {
				vm._data.__ob__.vmCount--
			}
			// call the last hook...
			vm._isDestroyed = true
			// invoke destroy hooks on current rendered tree
			vm.__patch__(vm._vnode, null)
			// fire destroyed hook
			callHook(vm, "destroyed")
			// turn off all instance listeners.
			vm.$off()
			// remove __vue__ reference
			if (vm.$el) {
				vm.$el.__vue__ = null
			}
			// release circular reference (#6759)
			if (vm.$vnode) {
				vm.$vnode.parent = null
			}
		}
	}

	function mountComponent(vm, el, hydrating) {
		vm.$el = el
		if (!vm.$options.render) {
			vm.$options.render = createEmptyVNode
			{
				/* istanbul ignore if */
				if (
					(vm.$options.template && vm.$options.template.charAt(0) !== "#") ||
					vm.$options.el ||
					el
				) {
					warn(
						"You are using the runtime-only build of Vue where the template " +
							"compiler is not available. Either pre-compile the templates into " +
							"render functions, or use the compiler-included build.",
						vm
					)
				} else {
					warn(
						"Failed to mount component: template or render function not defined.",
						vm
					)
				}
			}
		}
		callHook(vm, "beforeMount")

		var updateComponent
		/* istanbul ignore if */
		if (config.performance && mark) {
			updateComponent = function () {
				var name = vm._name
				var id = vm._uid
				var startTag = "vue-perf-start:" + id
				var endTag = "vue-perf-end:" + id

				mark(startTag)
				var vnode = vm._render()
				mark(endTag)
				measure("vue " + name + " render", startTag, endTag)

				mark(startTag)
				vm._update(vnode, hydrating)
				mark(endTag)
				measure("vue " + name + " patch", startTag, endTag)
			}
		} else {
			updateComponent = function () {
				vm._update(vm._render(), hydrating)
			}
		}

		// we set this to vm._watcher inside the watcher's constructor
		// since the watcher's initial patch may call $forceUpdate (e.g. inside child
		// component's mounted hook), which relies on vm._watcher being already defined
		new Watcher(
			vm,
			updateComponent,
			noop,
			{
				before: function before() {
					if (vm._isMounted && !vm._isDestroyed) {
						callHook(vm, "beforeUpdate")
					}
				},
			},
			true /* isRenderWatcher */
		)
		hydrating = false

		// manually mounted instance, call mounted on self
		// mounted is called for render-created child components in its inserted hook
		if (vm.$vnode == null) {
			vm._isMounted = true
			callHook(vm, "mounted")
		}
		return vm
	}

	function updateChildComponent(
		vm,
		propsData,
		listeners,
		parentVnode,
		renderChildren
	) {
		{
			isUpdatingChildComponent = true
		}

		// determine whether component has slot children
		// we need to do this before overwriting $options._renderChildren.

		// check if there are dynamic scopedSlots (hand-written or compiled but with
		// dynamic slot names). Static scoped slots compiled from template has the
		// "$stable" marker.
		var newScopedSlots = parentVnode.data.scopedSlots
		var oldScopedSlots = vm.$scopedSlots
		var hasDynamicScopedSlot = !!(
			(newScopedSlots && !newScopedSlots.$stable) ||
			(oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||
			(newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key)
		)

		// Any static slot children from the parent may have changed during parent's
		// update. Dynamic scoped slots may also have changed. In such cases, a forced
		// update is necessary to ensure correctness.
		var needsForceUpdate = !!(
			renderChildren || // has new static slots
			vm.$options._renderChildren || // has old static slots
			hasDynamicScopedSlot
		)

		vm.$options._parentVnode = parentVnode
		vm.$vnode = parentVnode // update vm's placeholder node without re-render

		if (vm._vnode) {
			// update child tree's parent
			vm._vnode.parent = parentVnode
		}
		vm.$options._renderChildren = renderChildren

		// update $attrs and $listeners hash
		// these are also reactive so they may trigger child update if the child
		// used them during render
		vm.$attrs = parentVnode.data.attrs || emptyObject
		vm.$listeners = listeners || emptyObject

		// update props
		if (propsData && vm.$options.props) {
			toggleObserving(false)
			var props = vm._props
			var propKeys = vm.$options._propKeys || []
			for (var i = 0; i < propKeys.length; i++) {
				var key = propKeys[i]
				var propOptions = vm.$options.props // wtf flow?
				props[key] = validateProp(key, propOptions, propsData, vm)
			}
			toggleObserving(true)
			// keep a copy of raw propsData
			vm.$options.propsData = propsData
		}

		// update listeners
		listeners = listeners || emptyObject
		var oldListeners = vm.$options._parentListeners
		vm.$options._parentListeners = listeners
		updateComponentListeners(vm, listeners, oldListeners)

		// resolve slots + force update if has children
		if (needsForceUpdate) {
			vm.$slots = resolveSlots(renderChildren, parentVnode.context)
			vm.$forceUpdate()
		}

		{
			isUpdatingChildComponent = false
		}
	}

	function isInInactiveTree(vm) {
		while (vm && (vm = vm.$parent)) {
			if (vm._inactive) {
				return true
			}
		}
		return false
	}

	function activateChildComponent(vm, direct) {
		if (direct) {
			vm._directInactive = false
			if (isInInactiveTree(vm)) {
				return
			}
		} else if (vm._directInactive) {
			return
		}
		if (vm._inactive || vm._inactive === null) {
			vm._inactive = false
			for (var i = 0; i < vm.$children.length; i++) {
				activateChildComponent(vm.$children[i])
			}
			callHook(vm, "activated")
		}
	}

	function deactivateChildComponent(vm, direct) {
		if (direct) {
			vm._directInactive = true
			if (isInInactiveTree(vm)) {
				return
			}
		}
		if (!vm._inactive) {
			vm._inactive = true
			for (var i = 0; i < vm.$children.length; i++) {
				deactivateChildComponent(vm.$children[i])
			}
			callHook(vm, "deactivated")
		}
	}

	function callHook(vm, hook) {
		// #7573 disable dep collection when invoking lifecycle hooks
		pushTarget()
		var handlers = vm.$options[hook]
		var info = hook + " hook"
		if (handlers) {
			for (var i = 0, j = handlers.length; i < j; i++) {
				invokeWithErrorHandling(handlers[i], vm, null, vm, info)
			}
		}
		if (vm._hasHookEvent) {
			vm.$emit("hook:" + hook)
		}
		popTarget()
	}

	/*  */

	var MAX_UPDATE_COUNT = 100

	var queue = []
	var activatedChildren = []
	var has = {}
	var circular = {}
	var waiting = false
	var flushing = false
	var index = 0

	/**
	 * Reset the scheduler's state.
	 */
	function resetSchedulerState() {
		index = queue.length = activatedChildren.length = 0
		has = {}
		{
			circular = {}
		}
		waiting = flushing = false
	}

	// Async edge case #6566 requires saving the timestamp when event listeners are
	// attached. However, calling performance.now() has a perf overhead especially
	// if the page has thousands of event listeners. Instead, we take a timestamp
	// every time the scheduler flushes and use that for all event listeners
	// attached during that flush.
	var currentFlushTimestamp = 0

	// Async edge case fix requires storing an event listener's attach timestamp.
	var getNow = Date.now

	// Determine what event timestamp the browser is using. Annoyingly, the
	// timestamp can either be hi-res (relative to page load) or low-res
	// (relative to UNIX epoch), so in order to compare time we have to use the
	// same timestamp type when saving the flush timestamp.
	// All IE versions use low-res event timestamps, and have problematic clock
	// implementations (#9632)
	if (inBrowser && !isIE) {
		var performance = window.performance
		if (
			performance &&
			typeof performance.now === "function" &&
			getNow() > document.createEvent("Event").timeStamp
		) {
			// if the event timestamp, although evaluated AFTER the Date.now(), is
			// smaller than it, it means the event is using a hi-res timestamp,
			// and we need to use the hi-res version for event listener timestamps as
			// well.
			getNow = function () {
				return performance.now()
			}
		}
	}

	/**
	 * Flush both queues and run the watchers.
	 */
	function flushSchedulerQueue() {
		currentFlushTimestamp = getNow()
		flushing = true
		var watcher, id

		// Sort queue before flush.
		// This ensures that:
		// 1. Components are updated from parent to child. (because parent is always
		//    created before the child)
		// 2. A component's user watchers are run before its render watcher (because
		//    user watchers are created before the render watcher)
		// 3. If a component is destroyed during a parent component's watcher run,
		//    its watchers can be skipped.
		queue.sort(function (a, b) {
			return a.id - b.id
		})

		// do not cache length because more watchers might be pushed
		// as we run existing watchers
		for (index = 0; index < queue.length; index++) {
			watcher = queue[index]
			if (watcher.before) {
				watcher.before()
			}
			id = watcher.id
			has[id] = null
			watcher.run()
			// in dev build, check and stop circular updates.
			if (has[id] != null) {
				circular[id] = (circular[id] || 0) + 1
				if (circular[id] > MAX_UPDATE_COUNT) {
					warn(
						"You may have an infinite update loop " +
							(watcher.user
								? 'in watcher with expression "' + watcher.expression + '"'
								: "in a component render function."),
						watcher.vm
					)
					break
				}
			}
		}

		// keep copies of post queues before resetting state
		var activatedQueue = activatedChildren.slice()
		var updatedQueue = queue.slice()

		resetSchedulerState()

		// call component updated and activated hooks
		callActivatedHooks(activatedQueue)
		callUpdatedHooks(updatedQueue)

		// devtool hook
		/* istanbul ignore if */
		if (devtools && config.devtools) {
			devtools.emit("flush")
		}
	}

	function callUpdatedHooks(queue) {
		var i = queue.length
		while (i--) {
			var watcher = queue[i]
			var vm = watcher.vm
			if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
				callHook(vm, "updated")
			}
		}
	}

	/**
	 * Queue a kept-alive component that was activated during patch.
	 * The queue will be processed after the entire tree has been patched.
	 */
	function queueActivatedComponent(vm) {
		// setting _inactive to false here so that a render function can
		// rely on checking whether it's in an inactive tree (e.g. router-view)
		vm._inactive = false
		activatedChildren.push(vm)
	}

	function callActivatedHooks(queue) {
		for (var i = 0; i < queue.length; i++) {
			queue[i]._inactive = true
			activateChildComponent(queue[i], true /* true */)
		}
	}

	/**
	 * Push a watcher into the watcher queue.
	 * Jobs with duplicate IDs will be skipped unless it's
	 * pushed when the queue is being flushed.
	 */
	function queueWatcher(watcher) {
		var id = watcher.id
		if (has[id] == null) {
			has[id] = true
			if (!flushing) {
				queue.push(watcher)
			} else {
				// if already flushing, splice the watcher based on its id
				// if already past its id, it will be run next immediately.
				var i = queue.length - 1
				while (i > index && queue[i].id > watcher.id) {
					i--
				}
				queue.splice(i + 1, 0, watcher)
			}
			// queue the flush
			if (!waiting) {
				waiting = true

				if (!config.async) {
					flushSchedulerQueue()
					return
				}
				nextTick(flushSchedulerQueue)
			}
		}
	}

	/*  */

	var uid$2 = 0

	/**
	 * A watcher parses an expression, collects dependencies,
	 * and fires callback when the expression value changes.
	 * This is used for both the $watch() api and directives.
	 */
	var Watcher = function Watcher(vm, expOrFn, cb, options, isRenderWatcher) {
		this.vm = vm
		if (isRenderWatcher) {
			vm._watcher = this
		}
		vm._watchers.push(this)
		// options
		if (options) {
			this.deep = !!options.deep
			this.user = !!options.user
			this.lazy = !!options.lazy
			this.sync = !!options.sync
			this.before = options.before
		} else {
			this.deep = this.user = this.lazy = this.sync = false
		}
		this.cb = cb
		this.id = ++uid$2 // uid for batching
		this.active = true
		this.dirty = this.lazy // for lazy watchers
		this.deps = []
		this.newDeps = []
		this.depIds = new _Set()
		this.newDepIds = new _Set()
		this.expression = expOrFn.toString()
		// parse expression for getter
		if (typeof expOrFn === "function") {
			this.getter = expOrFn
		} else {
			this.getter = parsePath(expOrFn)
			if (!this.getter) {
				this.getter = noop
				warn(
					'Failed watching path: "' +
						expOrFn +
						'" ' +
						"Watcher only accepts simple dot-delimited paths. " +
						"For full control, use a function instead.",
					vm
				)
			}
		}
		this.value = this.lazy ? undefined : this.get()
	}

	/**
	 * Evaluate the getter, and re-collect dependencies.
	 */
	Watcher.prototype.get = function get() {
		pushTarget(this)
		var value
		var vm = this.vm
		try {
			value = this.getter.call(vm, vm)
		} catch (e) {
			if (this.user) {
				handleError(e, vm, 'getter for watcher "' + this.expression + '"')
			} else {
				throw e
			}
		} finally {
			// "touch" every property so they are all tracked as
			// dependencies for deep watching
			if (this.deep) {
				traverse(value)
			}
			popTarget()
			this.cleanupDeps()
		}
		return value
	}

	/**
	 * Add a dependency to this directive.
	 */
	Watcher.prototype.addDep = function addDep(dep) {
		var id = dep.id
		if (!this.newDepIds.has(id)) {
			this.newDepIds.add(id)
			this.newDeps.push(dep)
			if (!this.depIds.has(id)) {
				dep.addSub(this)
			}
		}
	}

	/**
	 * Clean up for dependency collection.
	 */
	Watcher.prototype.cleanupDeps = function cleanupDeps() {
		var i = this.deps.length
		while (i--) {
			var dep = this.deps[i]
			if (!this.newDepIds.has(dep.id)) {
				dep.removeSub(this)
			}
		}
		var tmp = this.depIds
		this.depIds = this.newDepIds
		this.newDepIds = tmp
		this.newDepIds.clear()
		tmp = this.deps
		this.deps = this.newDeps
		this.newDeps = tmp
		this.newDeps.length = 0
	}

	/**
	 * Subscriber interface.
	 * Will be called when a dependency changes.
	 */
	Watcher.prototype.update = function update() {
		/* istanbul ignore else */
		if (this.lazy) {
			this.dirty = true
		} else if (this.sync) {
			this.run()
		} else {
			queueWatcher(this)
		}
	}

	/**
	 * Scheduler job interface.
	 * Will be called by the scheduler.
	 */
	Watcher.prototype.run = function run() {
		if (this.active) {
			var value = this.get()
			if (
				value !== this.value ||
				// Deep watchers and watchers on Object/Arrays should fire even
				// when the value is the same, because the value may
				// have mutated.
				isObject(value) ||
				this.deep
			) {
				// set new value
				var oldValue = this.value
				this.value = value
				if (this.user) {
					try {
						this.cb.call(this.vm, value, oldValue)
					} catch (e) {
						handleError(
							e,
							this.vm,
							'callback for watcher "' + this.expression + '"'
						)
					}
				} else {
					this.cb.call(this.vm, value, oldValue)
				}
			}
		}
	}

	/**
	 * Evaluate the value of the watcher.
	 * This only gets called for lazy watchers.
	 */
	Watcher.prototype.evaluate = function evaluate() {
		this.value = this.get()
		this.dirty = false
	}

	/**
	 * Depend on all deps collected by this watcher.
	 */
	Watcher.prototype.depend = function depend() {
		var i = this.deps.length
		while (i--) {
			this.deps[i].depend()
		}
	}

	/**
	 * Remove self from all dependencies' subscriber list.
	 */
	Watcher.prototype.teardown = function teardown() {
		if (this.active) {
			// remove self from vm's watcher list
			// this is a somewhat expensive operation so we skip it
			// if the vm is being destroyed.
			if (!this.vm._isBeingDestroyed) {
				remove(this.vm._watchers, this)
			}
			var i = this.deps.length
			while (i--) {
				this.deps[i].removeSub(this)
			}
			this.active = false
		}
	}

	/*  */

	var sharedPropertyDefinition = {
		enumerable: true,
		configurable: true,
		get: noop,
		set: noop,
	}

	function proxy(target, sourceKey, key) {
		sharedPropertyDefinition.get = function proxyGetter() {
			return this[sourceKey][key]
		}
		sharedPropertyDefinition.set = function proxySetter(val) {
			this[sourceKey][key] = val
		}
		Object.defineProperty(target, key, sharedPropertyDefinition)
	}

	function initState(vm) {
		vm._watchers = []
		var opts = vm.$options
		if (opts.props) {
			initProps(vm, opts.props)
		}
		if (opts.methods) {
			initMethods(vm, opts.methods)
		}
		if (opts.data) {
			initData(vm)
		} else {
			observe((vm._data = {}), true /* asRootData */)
		}
		if (opts.computed) {
			initComputed(vm, opts.computed)
		}
		if (opts.watch && opts.watch !== nativeWatch) {
			initWatch(vm, opts.watch)
		}
	}

	function initProps(vm, propsOptions) {
		var propsData = vm.$options.propsData || {}
		var props = (vm._props = {})
		// cache prop keys so that future props updates can iterate using Array
		// instead of dynamic object key enumeration.
		var keys = (vm.$options._propKeys = [])
		var isRoot = !vm.$parent
		// root instance props should be converted
		if (!isRoot) {
			toggleObserving(false)
		}
		var loop = function (key) {
			keys.push(key)
			var value = validateProp(key, propsOptions, propsData, vm)
			/* istanbul ignore else */
			{
				var hyphenatedKey = hyphenate(key)
				if (
					isReservedAttribute(hyphenatedKey) ||
					config.isReservedAttr(hyphenatedKey)
				) {
					warn(
						'"' +
							hyphenatedKey +
							'" is a reserved attribute and cannot be used as component prop.',
						vm
					)
				}
				defineReactive$$1(props, key, value, function () {
					if (!isRoot && !isUpdatingChildComponent) {
						warn(
							"Avoid mutating a prop directly since the value will be " +
								"overwritten whenever the parent component re-renders. " +
								"Instead, use a data or computed property based on the prop's " +
								'value. Prop being mutated: "' +
								key +
								'"',
							vm
						)
					}
				})
			}
			// static props are already proxied on the component's prototype
			// during Vue.extend(). We only need to proxy props defined at
			// instantiation here.
			if (!(key in vm)) {
				proxy(vm, "_props", key)
			}
		}

		for (var key in propsOptions) loop(key)
		toggleObserving(true)
	}

	function initData(vm) {
		var data = vm.$options.data
		data = vm._data =
			typeof data === "function" ? getData(data, vm) : data || {}
		if (!isPlainObject(data)) {
			data = {}
			warn(
				"data functions should return an object:\n" +
					"https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function",
				vm
			)
		}
		// proxy data on instance
		var keys = Object.keys(data)
		var props = vm.$options.props
		var methods = vm.$options.methods
		var i = keys.length
		while (i--) {
			var key = keys[i]
			{
				if (methods && hasOwn(methods, key)) {
					warn(
						'Method "' + key + '" has already been defined as a data property.',
						vm
					)
				}
			}
			if (props && hasOwn(props, key)) {
				warn(
					'The data property "' +
						key +
						'" is already declared as a prop. ' +
						"Use prop default value instead.",
					vm
				)
			} else if (!isReserved(key)) {
				proxy(vm, "_data", key)
			}
		}
		// observe data
		observe(data, true /* asRootData */)
	}

	function getData(data, vm) {
		// #7573 disable dep collection when invoking data getters
		pushTarget()
		try {
			return data.call(vm, vm)
		} catch (e) {
			handleError(e, vm, "data()")
			return {}
		} finally {
			popTarget()
		}
	}

	var computedWatcherOptions = { lazy: true }

	function initComputed(vm, computed) {
		// $flow-disable-line
		var watchers = (vm._computedWatchers = Object.create(null))
		// computed properties are just getters during SSR
		var isSSR = isServerRendering()

		for (var key in computed) {
			var userDef = computed[key]
			var getter = typeof userDef === "function" ? userDef : userDef.get
			if (getter == null) {
				warn('Getter is missing for computed property "' + key + '".', vm)
			}

			if (!isSSR) {
				// create internal watcher for the computed property.
				watchers[key] = new Watcher(
					vm,
					getter || noop,
					noop,
					computedWatcherOptions
				)
			}

			// component-defined computed properties are already defined on the
			// component prototype. We only need to define computed properties defined
			// at instantiation here.
			if (!(key in vm)) {
				defineComputed(vm, key, userDef)
			} else {
				if (key in vm.$data) {
					warn(
						'The computed property "' + key + '" is already defined in data.',
						vm
					)
				} else if (vm.$options.props && key in vm.$options.props) {
					warn(
						'The computed property "' + key + '" is already defined as a prop.',
						vm
					)
				}
			}
		}
	}

	function defineComputed(target, key, userDef) {
		var shouldCache = !isServerRendering()
		if (typeof userDef === "function") {
			sharedPropertyDefinition.get = shouldCache
				? createComputedGetter(key)
				: createGetterInvoker(userDef)
			sharedPropertyDefinition.set = noop
		} else {
			sharedPropertyDefinition.get = userDef.get
				? shouldCache && userDef.cache !== false
					? createComputedGetter(key)
					: createGetterInvoker(userDef.get)
				: noop
			sharedPropertyDefinition.set = userDef.set || noop
		}
		if (sharedPropertyDefinition.set === noop) {
			sharedPropertyDefinition.set = function () {
				warn(
					'Computed property "' +
						key +
						'" was assigned to but it has no setter.',
					this
				)
			}
		}
		Object.defineProperty(target, key, sharedPropertyDefinition)
	}

	function createComputedGetter(key) {
		return function computedGetter() {
			var watcher = this._computedWatchers && this._computedWatchers[key]
			if (watcher) {
				if (watcher.dirty) {
					watcher.evaluate()
				}
				if (Dep.target) {
					watcher.depend()
				}
				return watcher.value
			}
		}
	}

	function createGetterInvoker(fn) {
		return function computedGetter() {
			return fn.call(this, this)
		}
	}

	function initMethods(vm, methods) {
		var props = vm.$options.props
		for (var key in methods) {
			{
				if (typeof methods[key] !== "function") {
					warn(
						'Method "' +
							key +
							'" has type "' +
							typeof methods[key] +
							'" in the component definition. ' +
							"Did you reference the function correctly?",
						vm
					)
				}
				if (props && hasOwn(props, key)) {
					warn('Method "' + key + '" has already been defined as a prop.', vm)
				}
				if (key in vm && isReserved(key)) {
					warn(
						'Method "' +
							key +
							'" conflicts with an existing Vue instance method. ' +
							"Avoid defining component methods that start with _ or $."
					)
				}
			}
			vm[key] =
				typeof methods[key] !== "function" ? noop : bind(methods[key], vm)
		}
	}

	function initWatch(vm, watch) {
		for (var key in watch) {
			var handler = watch[key]
			if (Array.isArray(handler)) {
				for (var i = 0; i < handler.length; i++) {
					createWatcher(vm, key, handler[i])
				}
			} else {
				createWatcher(vm, key, handler)
			}
		}
	}

	function createWatcher(vm, expOrFn, handler, options) {
		if (isPlainObject(handler)) {
			options = handler
			handler = handler.handler
		}
		if (typeof handler === "string") {
			handler = vm[handler]
		}
		return vm.$watch(expOrFn, handler, options)
	}

	function stateMixin(Vue) {
		// flow somehow has problems with directly declared definition object
		// when using Object.defineProperty, so we have to procedurally build up
		// the object here.
		var dataDef = {}
		dataDef.get = function () {
			return this._data
		}
		var propsDef = {}
		propsDef.get = function () {
			return this._props
		}
		{
			dataDef.set = function () {
				warn(
					"Avoid replacing instance root $data. " +
						"Use nested data properties instead.",
					this
				)
			}
			propsDef.set = function () {
				warn("$props is readonly.", this)
			}
		}
		Object.defineProperty(Vue.prototype, "$data", dataDef)
		Object.defineProperty(Vue.prototype, "$props", propsDef)

		Vue.prototype.$set = set
		Vue.prototype.$delete = del

		Vue.prototype.$watch = function (expOrFn, cb, options) {
			var vm = this
			if (isPlainObject(cb)) {
				return createWatcher(vm, expOrFn, cb, options)
			}
			options = options || {}
			options.user = true
			var watcher = new Watcher(vm, expOrFn, cb, options)
			if (options.immediate) {
				try {
					cb.call(vm, watcher.value)
				} catch (error) {
					handleError(
						error,
						vm,
						'callback for immediate watcher "' + watcher.expression + '"'
					)
				}
			}
			return function unwatchFn() {
				watcher.teardown()
			}
		}
	}

	/*  */

	var uid$3 = 0

	function initMixin(Vue) {
		Vue.prototype._init = function (options) {
			var vm = this
			// a uid
			vm._uid = uid$3++

			var startTag, endTag
			/* istanbul ignore if */
			if (config.performance && mark) {
				startTag = "vue-perf-start:" + vm._uid
				endTag = "vue-perf-end:" + vm._uid
				mark(startTag)
			}

			// a flag to avoid this being observed
			vm._isVue = true
			// merge options
			if (options && options._isComponent) {
				// optimize internal component instantiation
				// since dynamic options merging is pretty slow, and none of the
				// internal component options needs special treatment.
				initInternalComponent(vm, options)
			} else {
				vm.$options = mergeOptions(
					resolveConstructorOptions(vm.constructor),
					options || {},
					vm
				)
			}
			/* istanbul ignore else */
			{
				initProxy(vm)
			}
			// expose real self
			vm._self = vm
			initLifecycle(vm)
			initEvents(vm)
			initRender(vm)
			callHook(vm, "beforeCreate")
			initInjections(vm) // resolve injections before data/props
			initState(vm)
			initProvide(vm) // resolve provide after data/props
			callHook(vm, "created")

			/* istanbul ignore if */
			if (config.performance && mark) {
				vm._name = formatComponentName(vm, false)
				mark(endTag)
				measure("vue " + vm._name + " init", startTag, endTag)
			}

			if (vm.$options.el) {
				vm.$mount(vm.$options.el)
			}
		}
	}

	function initInternalComponent(vm, options) {
		var opts = (vm.$options = Object.create(vm.constructor.options))
		// doing this because it's faster than dynamic enumeration.
		var parentVnode = options._parentVnode
		opts.parent = options.parent
		opts._parentVnode = parentVnode

		var vnodeComponentOptions = parentVnode.componentOptions
		opts.propsData = vnodeComponentOptions.propsData
		opts._parentListeners = vnodeComponentOptions.listeners
		opts._renderChildren = vnodeComponentOptions.children
		opts._componentTag = vnodeComponentOptions.tag

		if (options.render) {
			opts.render = options.render
			opts.staticRenderFns = options.staticRenderFns
		}
	}

	function resolveConstructorOptions(Ctor) {
		var options = Ctor.options
		if (Ctor.super) {
			var superOptions = resolveConstructorOptions(Ctor.super)
			var cachedSuperOptions = Ctor.superOptions
			if (superOptions !== cachedSuperOptions) {
				// super option changed,
				// need to resolve new options.
				Ctor.superOptions = superOptions
				// check if there are any late-modified/attached options (#4976)
				var modifiedOptions = resolveModifiedOptions(Ctor)
				// update base extend options
				if (modifiedOptions) {
					extend(Ctor.extendOptions, modifiedOptions)
				}
				options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions)
				if (options.name) {
					options.components[options.name] = Ctor
				}
			}
		}
		return options
	}

	function resolveModifiedOptions(Ctor) {
		var modified
		var latest = Ctor.options
		var sealed = Ctor.sealedOptions
		for (var key in latest) {
			if (latest[key] !== sealed[key]) {
				if (!modified) {
					modified = {}
				}
				modified[key] = latest[key]
			}
		}
		return modified
	}

	function Vue(options) {
		if (!(this instanceof Vue)) {
			warn("Vue is a constructor and should be called with the `new` keyword")
		}
		this._init(options)
	}

	initMixin(Vue)
	stateMixin(Vue)
	eventsMixin(Vue)
	lifecycleMixin(Vue)
	renderMixin(Vue)

	/*  */

	function initUse(Vue) {
		Vue.use = function (plugin) {
			var installedPlugins =
				this._installedPlugins || (this._installedPlugins = [])
			if (installedPlugins.indexOf(plugin) > -1) {
				return this
			}

			// additional parameters
			var args = toArray(arguments, 1)
			args.unshift(this)
			if (typeof plugin.install === "function") {
				plugin.install.apply(plugin, args)
			} else if (typeof plugin === "function") {
				plugin.apply(null, args)
			}
			installedPlugins.push(plugin)
			return this
		}
	}

	/*  */

	function initMixin$1(Vue) {
		Vue.mixin = function (mixin) {
			this.options = mergeOptions(this.options, mixin)
			return this
		}
	}

	/*  */

	function initExtend(Vue) {
		/**
		 * Each instance constructor, including Vue, has a unique
		 * cid. This enables us to create wrapped "child
		 * constructors" for prototypal inheritance and cache them.
		 */
		Vue.cid = 0
		var cid = 1

		/**
		 * Class inheritance
		 */
		Vue.extend = function (extendOptions) {
			extendOptions = extendOptions || {}
			var Super = this
			var SuperId = Super.cid
			var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {})
			if (cachedCtors[SuperId]) {
				return cachedCtors[SuperId]
			}

			var name = extendOptions.name || Super.options.name
			if (name) {
				validateComponentName(name)
			}

			var Sub = function VueComponent(options) {
				this._init(options)
			}
			Sub.prototype = Object.create(Super.prototype)
			Sub.prototype.constructor = Sub
			Sub.cid = cid++
			Sub.options = mergeOptions(Super.options, extendOptions)
			Sub["super"] = Super

			// For props and computed properties, we define the proxy getters on
			// the Vue instances at extension time, on the extended prototype. This
			// avoids Object.defineProperty calls for each instance created.
			if (Sub.options.props) {
				initProps$1(Sub)
			}
			if (Sub.options.computed) {
				initComputed$1(Sub)
			}

			// allow further extension/mixin/plugin usage
			Sub.extend = Super.extend
			Sub.mixin = Super.mixin
			Sub.use = Super.use

			// create asset registers, so extended classes
			// can have their private assets too.
			ASSET_TYPES.forEach(function (type) {
				Sub[type] = Super[type]
			})
			// enable recursive self-lookup
			if (name) {
				Sub.options.components[name] = Sub
			}

			// keep a reference to the super options at extension time.
			// later at instantiation we can check if Super's options have
			// been updated.
			Sub.superOptions = Super.options
			Sub.extendOptions = extendOptions
			Sub.sealedOptions = extend({}, Sub.options)

			// cache constructor
			cachedCtors[SuperId] = Sub
			return Sub
		}
	}

	function initProps$1(Comp) {
		var props = Comp.options.props
		for (var key in props) {
			proxy(Comp.prototype, "_props", key)
		}
	}

	function initComputed$1(Comp) {
		var computed = Comp.options.computed
		for (var key in computed) {
			defineComputed(Comp.prototype, key, computed[key])
		}
	}

	/*  */

	function initAssetRegisters(Vue) {
		/**
		 * Create asset registration methods.
		 */
		ASSET_TYPES.forEach(function (type) {
			Vue[type] = function (id, definition) {
				if (!definition) {
					return this.options[type + "s"][id]
				} else {
					/* istanbul ignore if */
					if (type === "component") {
						validateComponentName(id)
					}
					if (type === "component" && isPlainObject(definition)) {
						definition.name = definition.name || id
						definition = this.options._base.extend(definition)
					}
					if (type === "directive" && typeof definition === "function") {
						definition = { bind: definition, update: definition }
					}
					this.options[type + "s"][id] = definition
					return definition
				}
			}
		})
	}

	/*  */

	function getComponentName(opts) {
		return opts && (opts.Ctor.options.name || opts.tag)
	}

	function matches(pattern, name) {
		if (Array.isArray(pattern)) {
			return pattern.indexOf(name) > -1
		} else if (typeof pattern === "string") {
			return pattern.split(",").indexOf(name) > -1
		} else if (isRegExp(pattern)) {
			return pattern.test(name)
		}
		/* istanbul ignore next */
		return false
	}

	function pruneCache(keepAliveInstance, filter) {
		var cache = keepAliveInstance.cache
		var keys = keepAliveInstance.keys
		var _vnode = keepAliveInstance._vnode
		for (var key in cache) {
			var cachedNode = cache[key]
			if (cachedNode) {
				var name = getComponentName(cachedNode.componentOptions)
				if (name && !filter(name)) {
					pruneCacheEntry(cache, key, keys, _vnode)
				}
			}
		}
	}

	function pruneCacheEntry(cache, key, keys, current) {
		var cached$$1 = cache[key]
		if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
			cached$$1.componentInstance.$destroy()
		}
		cache[key] = null
		remove(keys, key)
	}

	var patternTypes = [String, RegExp, Array]

	var KeepAlive = {
		name: "keep-alive",
		abstract: true,

		props: {
			include: patternTypes,
			exclude: patternTypes,
			max: [String, Number],
		},

		created: function created() {
			this.cache = Object.create(null)
			this.keys = []
		},

		destroyed: function destroyed() {
			for (var key in this.cache) {
				pruneCacheEntry(this.cache, key, this.keys)
			}
		},

		mounted: function mounted() {
			var this$1 = this

			this.$watch("include", function (val) {
				pruneCache(this$1, function (name) {
					return matches(val, name)
				})
			})
			this.$watch("exclude", function (val) {
				pruneCache(this$1, function (name) {
					return !matches(val, name)
				})
			})
		},

		render: function render() {
			var slot = this.$slots.default
			var vnode = getFirstComponentChild(slot)
			var componentOptions = vnode && vnode.componentOptions
			if (componentOptions) {
				// check pattern
				var name = getComponentName(componentOptions)
				var ref = this
				var include = ref.include
				var exclude = ref.exclude
				if (
					// not included
					(include && (!name || !matches(include, name))) ||
					// excluded
					(exclude && name && matches(exclude, name))
				) {
					return vnode
				}

				var ref$1 = this
				var cache = ref$1.cache
				var keys = ref$1.keys
				var key =
					vnode.key == null
						? // same constructor may get registered as different local components
						  // so cid alone is not enough (#3269)
						  componentOptions.Ctor.cid +
						  (componentOptions.tag ? "::" + componentOptions.tag : "")
						: vnode.key
				if (cache[key]) {
					vnode.componentInstance = cache[key].componentInstance
					// make current key freshest
					remove(keys, key)
					keys.push(key)
				} else {
					cache[key] = vnode
					keys.push(key)
					// prune oldest entry
					if (this.max && keys.length > parseInt(this.max)) {
						pruneCacheEntry(cache, keys[0], keys, this._vnode)
					}
				}

				vnode.data.keepAlive = true
			}
			return vnode || (slot && slot[0])
		},
	}

	var builtInComponents = {
		KeepAlive: KeepAlive,
	}

	/*  */

	function initGlobalAPI(Vue) {
		// config
		var configDef = {}
		configDef.get = function () {
			return config
		}
		{
			configDef.set = function () {
				warn(
					"Do not replace the Vue.config object, set individual fields instead."
				)
			}
		}
		Object.defineProperty(Vue, "config", configDef)

		// exposed util methods.
		// NOTE: these are not considered part of the public API - avoid relying on
		// them unless you are aware of the risk.
		Vue.util = {
			warn: warn,
			extend: extend,
			mergeOptions: mergeOptions,
			defineReactive: defineReactive$$1,
		}

		Vue.set = set
		Vue.delete = del
		Vue.nextTick = nextTick

		// 2.6 explicit observable API
		Vue.observable = function (obj) {
			observe(obj)
			return obj
		}

		Vue.options = Object.create(null)
		ASSET_TYPES.forEach(function (type) {
			Vue.options[type + "s"] = Object.create(null)
		})

		// this is used to identify the "base" constructor to extend all plain-object
		// components with in Weex's multi-instance scenarios.
		Vue.options._base = Vue

		extend(Vue.options.components, builtInComponents)

		initUse(Vue)
		initMixin$1(Vue)
		initExtend(Vue)
		initAssetRegisters(Vue)
	}

	initGlobalAPI(Vue)

	Object.defineProperty(Vue.prototype, "$isServer", {
		get: isServerRendering,
	})

	Object.defineProperty(Vue.prototype, "$ssrContext", {
		get: function get() {
			/* istanbul ignore next */
			return this.$vnode && this.$vnode.ssrContext
		},
	})

	// expose FunctionalRenderContext for ssr runtime helper installation
	Object.defineProperty(Vue, "FunctionalRenderContext", {
		value: FunctionalRenderContext,
	})

	Vue.version = "2.6.12"

	/*  */

	// these are reserved for web because they are directly compiled away
	// during template compilation
	var isReservedAttr = makeMap("style,class")

	// attributes that should be using props for binding
	var acceptValue = makeMap("input,textarea,option,select,progress")
	var mustUseProp = function (tag, type, attr) {
		return (
			(attr === "value" && acceptValue(tag) && type !== "button") ||
			(attr === "selected" && tag === "option") ||
			(attr === "checked" && tag === "input") ||
			(attr === "muted" && tag === "video")
		)
	}

	var isEnumeratedAttr = makeMap("contenteditable,draggable,spellcheck")

	var isValidContentEditableValue = makeMap(
		"events,caret,typing,plaintext-only"
	)

	var convertEnumeratedValue = function (key, value) {
		return isFalsyAttrValue(value) || value === "false"
			? "false"
			: // allow arbitrary string value for contenteditable
			key === "contenteditable" && isValidContentEditableValue(value)
			? value
			: "true"
	}

	var isBooleanAttr = makeMap(
		"allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare," +
			"default,defaultchecked,defaultmuted,defaultselected,defer,disabled," +
			"enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple," +
			"muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly," +
			"required,reversed,scoped,seamless,selected,sortable,translate," +
			"truespeed,typemustmatch,visible"
	)

	var xlinkNS = "http://www.w3.org/1999/xlink"

	var isXlink = function (name) {
		return name.charAt(5) === ":" && name.slice(0, 5) === "xlink"
	}

	var getXlinkProp = function (name) {
		return isXlink(name) ? name.slice(6, name.length) : ""
	}

	var isFalsyAttrValue = function (val) {
		return val == null || val === false
	}

	/*  */

	function genClassForVnode(vnode) {
		var data = vnode.data
		var parentNode = vnode
		var childNode = vnode
		while (isDef(childNode.componentInstance)) {
			childNode = childNode.componentInstance._vnode
			if (childNode && childNode.data) {
				data = mergeClassData(childNode.data, data)
			}
		}
		while (isDef((parentNode = parentNode.parent))) {
			if (parentNode && parentNode.data) {
				data = mergeClassData(data, parentNode.data)
			}
		}
		return renderClass(data.staticClass, data.class)
	}

	function mergeClassData(child, parent) {
		return {
			staticClass: concat(child.staticClass, parent.staticClass),
			class: isDef(child.class) ? [child.class, parent.class] : parent.class,
		}
	}

	function renderClass(staticClass, dynamicClass) {
		if (isDef(staticClass) || isDef(dynamicClass)) {
			return concat(staticClass, stringifyClass(dynamicClass))
		}
		/* istanbul ignore next */
		return ""
	}

	function concat(a, b) {
		return a ? (b ? a + " " + b : a) : b || ""
	}

	function stringifyClass(value) {
		if (Array.isArray(value)) {
			return stringifyArray(value)
		}
		if (isObject(value)) {
			return stringifyObject(value)
		}
		if (typeof value === "string") {
			return value
		}
		/* istanbul ignore next */
		return ""
	}

	function stringifyArray(value) {
		var res = ""
		var stringified
		for (var i = 0, l = value.length; i < l; i++) {
			if (
				isDef((stringified = stringifyClass(value[i]))) &&
				stringified !== ""
			) {
				if (res) {
					res += " "
				}
				res += stringified
			}
		}
		return res
	}

	function stringifyObject(value) {
		var res = ""
		for (var key in value) {
			if (value[key]) {
				if (res) {
					res += " "
				}
				res += key
			}
		}
		return res
	}

	/*  */

	var namespaceMap = {
		svg: "http://www.w3.org/2000/svg",
		math: "http://www.w3.org/1998/Math/MathML",
	}

	var isHTMLTag = makeMap(
		"html,body,base,head,link,meta,style,title," +
			"address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section," +
			"div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul," +
			"a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby," +
			"s,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video," +
			"embed,object,param,source,canvas,script,noscript,del,ins," +
			"caption,col,colgroup,table,thead,tbody,td,th,tr," +
			"button,datalist,fieldset,form,input,label,legend,meter,optgroup,option," +
			"output,progress,select,textarea," +
			"details,dialog,menu,menuitem,summary," +
			"content,element,shadow,template,blockquote,iframe,tfoot"
	)

	// this map is intentionally selective, only covering SVG elements that may
	// contain child elements.
	var isSVG = makeMap(
		"svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face," +
			"foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern," +
			"polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view",
		true
	)

	var isPreTag = function (tag) {
		return tag === "pre"
	}

	var isReservedTag = function (tag) {
		return isHTMLTag(tag) || isSVG(tag)
	}

	function getTagNamespace(tag) {
		if (isSVG(tag)) {
			return "svg"
		}
		// basic support for MathML
		// note it doesn't support other MathML elements being component roots
		if (tag === "math") {
			return "math"
		}
	}

	var unknownElementCache = Object.create(null)
	function isUnknownElement(tag) {
		/* istanbul ignore if */
		if (!inBrowser) {
			return true
		}
		if (isReservedTag(tag)) {
			return false
		}
		tag = tag.toLowerCase()
		/* istanbul ignore if */
		if (unknownElementCache[tag] != null) {
			return unknownElementCache[tag]
		}
		var el = document.createElement(tag)
		if (tag.indexOf("-") > -1) {
			// http://stackoverflow.com/a/28210364/1070244
			return (unknownElementCache[tag] =
				el.constructor === window.HTMLUnknownElement ||
				el.constructor === window.HTMLElement)
		} else {
			return (unknownElementCache[tag] = /HTMLUnknownElement/.test(
				el.toString()
			))
		}
	}

	var isTextInputType = makeMap("text,number,password,search,email,tel,url")

	/*  */

	/**
	 * Query an element selector if it's not an element already.
	 */
	function query(el) {
		if (typeof el === "string") {
			var selected = document.querySelector(el)
			if (!selected) {
				warn("Cannot find element: " + el)
				return document.createElement("div")
			}
			return selected
		} else {
			return el
		}
	}

	/*  */

	function createElement$1(tagName, vnode) {
		var elm = document.createElement(tagName)
		if (tagName !== "select") {
			return elm
		}
		// false or null will remove the attribute but undefined will not
		if (
			vnode.data &&
			vnode.data.attrs &&
			vnode.data.attrs.multiple !== undefined
		) {
			elm.setAttribute("multiple", "multiple")
		}
		return elm
	}

	function createElementNS(namespace, tagName) {
		return document.createElementNS(namespaceMap[namespace], tagName)
	}

	function createTextNode(text) {
		return document.createTextNode(text)
	}

	function createComment(text) {
		return document.createComment(text)
	}

	function insertBefore(parentNode, newNode, referenceNode) {
		parentNode.insertBefore(newNode, referenceNode)
	}

	function removeChild(node, child) {
		node.removeChild(child)
	}

	function appendChild(node, child) {
		node.appendChild(child)
	}

	function parentNode(node) {
		return node.parentNode
	}

	function nextSibling(node) {
		return node.nextSibling
	}

	function tagName(node) {
		return node.tagName
	}

	function setTextContent(node, text) {
		node.textContent = text
	}

	function setStyleScope(node, scopeId) {
		node.setAttribute(scopeId, "")
	}

	var nodeOps = /*#__PURE__*/ Object.freeze({
		createElement: createElement$1,
		createElementNS: createElementNS,
		createTextNode: createTextNode,
		createComment: createComment,
		insertBefore: insertBefore,
		removeChild: removeChild,
		appendChild: appendChild,
		parentNode: parentNode,
		nextSibling: nextSibling,
		tagName: tagName,
		setTextContent: setTextContent,
		setStyleScope: setStyleScope,
	})

	/*  */

	var ref = {
		create: function create(_, vnode) {
			registerRef(vnode)
		},
		update: function update(oldVnode, vnode) {
			if (oldVnode.data.ref !== vnode.data.ref) {
				registerRef(oldVnode, true)
				registerRef(vnode)
			}
		},
		destroy: function destroy(vnode) {
			registerRef(vnode, true)
		},
	}

	function registerRef(vnode, isRemoval) {
		var key = vnode.data.ref
		if (!isDef(key)) {
			return
		}

		var vm = vnode.context
		var ref = vnode.componentInstance || vnode.elm
		var refs = vm.$refs
		if (isRemoval) {
			if (Array.isArray(refs[key])) {
				remove(refs[key], ref)
			} else if (refs[key] === ref) {
				refs[key] = undefined
			}
		} else {
			if (vnode.data.refInFor) {
				if (!Array.isArray(refs[key])) {
					refs[key] = [ref]
				} else if (refs[key].indexOf(ref) < 0) {
					// $flow-disable-line
					refs[key].push(ref)
				}
			} else {
				refs[key] = ref
			}
		}
	}

	/**
	 * Virtual DOM patching algorithm based on Snabbdom by
	 * Simon Friis Vindum (@paldepind)
	 * Licensed under the MIT License
	 * https://github.com/paldepind/snabbdom/blob/master/LICENSE
	 *
	 * modified by Evan You (@yyx990803)
	 *
	 * Not type-checking this because this file is perf-critical and the cost
	 * of making flow understand it is not worth it.
	 */

	var emptyNode = new VNode("", {}, [])

	var hooks = ["create", "activate", "update", "remove", "destroy"]

	function sameVnode(a, b) {
		return (
			a.key === b.key &&
			((a.tag === b.tag &&
				a.isComment === b.isComment &&
				isDef(a.data) === isDef(b.data) &&
				sameInputType(a, b)) ||
				(isTrue(a.isAsyncPlaceholder) &&
					a.asyncFactory === b.asyncFactory &&
					isUndef(b.asyncFactory.error)))
		)
	}

	function sameInputType(a, b) {
		if (a.tag !== "input") {
			return true
		}
		var i
		var typeA = isDef((i = a.data)) && isDef((i = i.attrs)) && i.type
		var typeB = isDef((i = b.data)) && isDef((i = i.attrs)) && i.type
		return typeA === typeB || (isTextInputType(typeA) && isTextInputType(typeB))
	}

	function createKeyToOldIdx(children, beginIdx, endIdx) {
		var i, key
		var map = {}
		for (i = beginIdx; i <= endIdx; ++i) {
			key = children[i].key
			if (isDef(key)) {
				map[key] = i
			}
		}
		return map
	}

	function createPatchFunction(backend) {
		var i, j
		var cbs = {}

		var modules = backend.modules
		var nodeOps = backend.nodeOps

		for (i = 0; i < hooks.length; ++i) {
			cbs[hooks[i]] = []
			for (j = 0; j < modules.length; ++j) {
				if (isDef(modules[j][hooks[i]])) {
					cbs[hooks[i]].push(modules[j][hooks[i]])
				}
			}
		}

		function emptyNodeAt(elm) {
			return new VNode(
				nodeOps.tagName(elm).toLowerCase(),
				{},
				[],
				undefined,
				elm
			)
		}

		function createRmCb(childElm, listeners) {
			function remove$$1() {
				if (--remove$$1.listeners === 0) {
					removeNode(childElm)
				}
			}
			remove$$1.listeners = listeners
			return remove$$1
		}

		function removeNode(el) {
			var parent = nodeOps.parentNode(el)
			// element may have already been removed due to v-html / v-text
			if (isDef(parent)) {
				nodeOps.removeChild(parent, el)
			}
		}

		function isUnknownElement$$1(vnode, inVPre) {
			return (
				!inVPre &&
				!vnode.ns &&
				!(
					config.ignoredElements.length &&
					config.ignoredElements.some(function (ignore) {
						return isRegExp(ignore)
							? ignore.test(vnode.tag)
							: ignore === vnode.tag
					})
				) &&
				config.isUnknownElement(vnode.tag)
			)
		}

		var creatingElmInVPre = 0

		function createElm(
			vnode,
			insertedVnodeQueue,
			parentElm,
			refElm,
			nested,
			ownerArray,
			index
		) {
			if (isDef(vnode.elm) && isDef(ownerArray)) {
				// This vnode was used in a previous render!
				// now it's used as a new node, overwriting its elm would cause
				// potential patch errors down the road when it's used as an insertion
				// reference node. Instead, we clone the node on-demand before creating
				// associated DOM element for it.
				vnode = ownerArray[index] = cloneVNode(vnode)
			}

			vnode.isRootInsert = !nested // for transition enter check
			if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
				return
			}

			var data = vnode.data
			var children = vnode.children
			var tag = vnode.tag
			if (isDef(tag)) {
				{
					if (data && data.pre) {
						creatingElmInVPre++
					}
					if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
						warn(
							"Unknown custom element: <" +
								tag +
								"> - did you " +
								"register the component correctly? For recursive components, " +
								'make sure to provide the "name" option.',
							vnode.context
						)
					}
				}

				vnode.elm = vnode.ns
					? nodeOps.createElementNS(vnode.ns, tag)
					: nodeOps.createElement(tag, vnode)
				setScope(vnode)

				/* istanbul ignore if */
				{
					createChildren(vnode, children, insertedVnodeQueue)
					if (isDef(data)) {
						invokeCreateHooks(vnode, insertedVnodeQueue)
					}
					insert(parentElm, vnode.elm, refElm)
				}

				if (data && data.pre) {
					creatingElmInVPre--
				}
			} else if (isTrue(vnode.isComment)) {
				vnode.elm = nodeOps.createComment(vnode.text)
				insert(parentElm, vnode.elm, refElm)
			} else {
				vnode.elm = nodeOps.createTextNode(vnode.text)
				insert(parentElm, vnode.elm, refElm)
			}
		}

		function createComponent(vnode, insertedVnodeQueue, parentElm, refElm) {
			var i = vnode.data
			if (isDef(i)) {
				var isReactivated = isDef(vnode.componentInstance) && i.keepAlive
				if (isDef((i = i.hook)) && isDef((i = i.init))) {
					i(vnode, false /* hydrating */)
				}
				// after calling the init hook, if the vnode is a child component
				// it should've created a child instance and mounted it. the child
				// component also has set the placeholder vnode's elm.
				// in that case we can just return the element and be done.
				if (isDef(vnode.componentInstance)) {
					initComponent(vnode, insertedVnodeQueue)
					insert(parentElm, vnode.elm, refElm)
					if (isTrue(isReactivated)) {
						reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm)
					}
					return true
				}
			}
		}

		function initComponent(vnode, insertedVnodeQueue) {
			if (isDef(vnode.data.pendingInsert)) {
				insertedVnodeQueue.push.apply(
					insertedVnodeQueue,
					vnode.data.pendingInsert
				)
				vnode.data.pendingInsert = null
			}
			vnode.elm = vnode.componentInstance.$el
			if (isPatchable(vnode)) {
				invokeCreateHooks(vnode, insertedVnodeQueue)
				setScope(vnode)
			} else {
				// empty component root.
				// skip all element-related modules except for ref (#3455)
				registerRef(vnode)
				// make sure to invoke the insert hook
				insertedVnodeQueue.push(vnode)
			}
		}

		function reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm) {
			var i
			// hack for #4339: a reactivated component with inner transition
			// does not trigger because the inner node's created hooks are not called
			// again. It's not ideal to involve module-specific logic in here but
			// there doesn't seem to be a better way to do it.
			var innerNode = vnode
			while (innerNode.componentInstance) {
				innerNode = innerNode.componentInstance._vnode
				if (isDef((i = innerNode.data)) && isDef((i = i.transition))) {
					for (i = 0; i < cbs.activate.length; ++i) {
						cbs.activate[i](emptyNode, innerNode)
					}
					insertedVnodeQueue.push(innerNode)
					break
				}
			}
			// unlike a newly created component,
			// a reactivated keep-alive component doesn't insert itself
			insert(parentElm, vnode.elm, refElm)
		}

		function insert(parent, elm, ref$$1) {
			if (isDef(parent)) {
				if (isDef(ref$$1)) {
					if (nodeOps.parentNode(ref$$1) === parent) {
						nodeOps.insertBefore(parent, elm, ref$$1)
					}
				} else {
					nodeOps.appendChild(parent, elm)
				}
			}
		}

		function createChildren(vnode, children, insertedVnodeQueue) {
			if (Array.isArray(children)) {
				{
					checkDuplicateKeys(children)
				}
				for (var i = 0; i < children.length; ++i) {
					createElm(
						children[i],
						insertedVnodeQueue,
						vnode.elm,
						null,
						true,
						children,
						i
					)
				}
			} else if (isPrimitive(vnode.text)) {
				nodeOps.appendChild(
					vnode.elm,
					nodeOps.createTextNode(String(vnode.text))
				)
			}
		}

		function isPatchable(vnode) {
			while (vnode.componentInstance) {
				vnode = vnode.componentInstance._vnode
			}
			return isDef(vnode.tag)
		}

		function invokeCreateHooks(vnode, insertedVnodeQueue) {
			for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
				cbs.create[i$1](emptyNode, vnode)
			}
			i = vnode.data.hook // Reuse variable
			if (isDef(i)) {
				if (isDef(i.create)) {
					i.create(emptyNode, vnode)
				}
				if (isDef(i.insert)) {
					insertedVnodeQueue.push(vnode)
				}
			}
		}

		// set scope id attribute for scoped CSS.
		// this is implemented as a special case to avoid the overhead
		// of going through the normal attribute patching process.
		function setScope(vnode) {
			var i
			if (isDef((i = vnode.fnScopeId))) {
				nodeOps.setStyleScope(vnode.elm, i)
			} else {
				var ancestor = vnode
				while (ancestor) {
					if (
						isDef((i = ancestor.context)) &&
						isDef((i = i.$options._scopeId))
					) {
						nodeOps.setStyleScope(vnode.elm, i)
					}
					ancestor = ancestor.parent
				}
			}
			// for slot content they should also get the scopeId from the host instance.
			if (
				isDef((i = activeInstance)) &&
				i !== vnode.context &&
				i !== vnode.fnContext &&
				isDef((i = i.$options._scopeId))
			) {
				nodeOps.setStyleScope(vnode.elm, i)
			}
		}

		function addVnodes(
			parentElm,
			refElm,
			vnodes,
			startIdx,
			endIdx,
			insertedVnodeQueue
		) {
			for (; startIdx <= endIdx; ++startIdx) {
				createElm(
					vnodes[startIdx],
					insertedVnodeQueue,
					parentElm,
					refElm,
					false,
					vnodes,
					startIdx
				)
			}
		}

		function invokeDestroyHook(vnode) {
			var i, j
			var data = vnode.data
			if (isDef(data)) {
				if (isDef((i = data.hook)) && isDef((i = i.destroy))) {
					i(vnode)
				}
				for (i = 0; i < cbs.destroy.length; ++i) {
					cbs.destroy[i](vnode)
				}
			}
			if (isDef((i = vnode.children))) {
				for (j = 0; j < vnode.children.length; ++j) {
					invokeDestroyHook(vnode.children[j])
				}
			}
		}

		function removeVnodes(vnodes, startIdx, endIdx) {
			for (; startIdx <= endIdx; ++startIdx) {
				var ch = vnodes[startIdx]
				if (isDef(ch)) {
					if (isDef(ch.tag)) {
						removeAndInvokeRemoveHook(ch)
						invokeDestroyHook(ch)
					} else {
						// Text node
						removeNode(ch.elm)
					}
				}
			}
		}

		function removeAndInvokeRemoveHook(vnode, rm) {
			if (isDef(rm) || isDef(vnode.data)) {
				var i
				var listeners = cbs.remove.length + 1
				if (isDef(rm)) {
					// we have a recursively passed down rm callback
					// increase the listeners count
					rm.listeners += listeners
				} else {
					// directly removing
					rm = createRmCb(vnode.elm, listeners)
				}
				// recursively invoke hooks on child component root node
				if (
					isDef((i = vnode.componentInstance)) &&
					isDef((i = i._vnode)) &&
					isDef(i.data)
				) {
					removeAndInvokeRemoveHook(i, rm)
				}
				for (i = 0; i < cbs.remove.length; ++i) {
					cbs.remove[i](vnode, rm)
				}
				if (isDef((i = vnode.data.hook)) && isDef((i = i.remove))) {
					i(vnode, rm)
				} else {
					rm()
				}
			} else {
				removeNode(vnode.elm)
			}
		}

		function updateChildren(
			parentElm,
			oldCh,
			newCh,
			insertedVnodeQueue,
			removeOnly
		) {
			var oldStartIdx = 0
			var newStartIdx = 0
			var oldEndIdx = oldCh.length - 1
			var oldStartVnode = oldCh[0]
			var oldEndVnode = oldCh[oldEndIdx]
			var newEndIdx = newCh.length - 1
			var newStartVnode = newCh[0]
			var newEndVnode = newCh[newEndIdx]
			var oldKeyToIdx, idxInOld, vnodeToMove, refElm

			// removeOnly is a special flag used only by <transition-group>
			// to ensure removed elements stay in correct relative positions
			// during leaving transitions
			var canMove = !removeOnly

			{
				checkDuplicateKeys(newCh)
			}

			while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
				if (isUndef(oldStartVnode)) {
					oldStartVnode = oldCh[++oldStartIdx] // Vnode has been moved left
				} else if (isUndef(oldEndVnode)) {
					oldEndVnode = oldCh[--oldEndIdx]
				} else if (sameVnode(oldStartVnode, newStartVnode)) {
					patchVnode(
						oldStartVnode,
						newStartVnode,
						insertedVnodeQueue,
						newCh,
						newStartIdx
					)
					oldStartVnode = oldCh[++oldStartIdx]
					newStartVnode = newCh[++newStartIdx]
				} else if (sameVnode(oldEndVnode, newEndVnode)) {
					patchVnode(
						oldEndVnode,
						newEndVnode,
						insertedVnodeQueue,
						newCh,
						newEndIdx
					)
					oldEndVnode = oldCh[--oldEndIdx]
					newEndVnode = newCh[--newEndIdx]
				} else if (sameVnode(oldStartVnode, newEndVnode)) {
					// Vnode moved right
					patchVnode(
						oldStartVnode,
						newEndVnode,
						insertedVnodeQueue,
						newCh,
						newEndIdx
					)
					canMove &&
						nodeOps.insertBefore(
							parentElm,
							oldStartVnode.elm,
							nodeOps.nextSibling(oldEndVnode.elm)
						)
					oldStartVnode = oldCh[++oldStartIdx]
					newEndVnode = newCh[--newEndIdx]
				} else if (sameVnode(oldEndVnode, newStartVnode)) {
					// Vnode moved left
					patchVnode(
						oldEndVnode,
						newStartVnode,
						insertedVnodeQueue,
						newCh,
						newStartIdx
					)
					canMove &&
						nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm)
					oldEndVnode = oldCh[--oldEndIdx]
					newStartVnode = newCh[++newStartIdx]
				} else {
					if (isUndef(oldKeyToIdx)) {
						oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx)
					}
					idxInOld = isDef(newStartVnode.key)
						? oldKeyToIdx[newStartVnode.key]
						: findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx)
					if (isUndef(idxInOld)) {
						// New element
						createElm(
							newStartVnode,
							insertedVnodeQueue,
							parentElm,
							oldStartVnode.elm,
							false,
							newCh,
							newStartIdx
						)
					} else {
						vnodeToMove = oldCh[idxInOld]
						if (sameVnode(vnodeToMove, newStartVnode)) {
							patchVnode(
								vnodeToMove,
								newStartVnode,
								insertedVnodeQueue,
								newCh,
								newStartIdx
							)
							oldCh[idxInOld] = undefined
							canMove &&
								nodeOps.insertBefore(
									parentElm,
									vnodeToMove.elm,
									oldStartVnode.elm
								)
						} else {
							// same key but different element. treat as new element
							createElm(
								newStartVnode,
								insertedVnodeQueue,
								parentElm,
								oldStartVnode.elm,
								false,
								newCh,
								newStartIdx
							)
						}
					}
					newStartVnode = newCh[++newStartIdx]
				}
			}
			if (oldStartIdx > oldEndIdx) {
				refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm
				addVnodes(
					parentElm,
					refElm,
					newCh,
					newStartIdx,
					newEndIdx,
					insertedVnodeQueue
				)
			} else if (newStartIdx > newEndIdx) {
				removeVnodes(oldCh, oldStartIdx, oldEndIdx)
			}
		}

		function checkDuplicateKeys(children) {
			var seenKeys = {}
			for (var i = 0; i < children.length; i++) {
				var vnode = children[i]
				var key = vnode.key
				if (isDef(key)) {
					if (seenKeys[key]) {
						warn(
							"Duplicate keys detected: '" +
								key +
								"'. This may cause an update error.",
							vnode.context
						)
					} else {
						seenKeys[key] = true
					}
				}
			}
		}

		function findIdxInOld(node, oldCh, start, end) {
			for (var i = start; i < end; i++) {
				var c = oldCh[i]
				if (isDef(c) && sameVnode(node, c)) {
					return i
				}
			}
		}

		function patchVnode(
			oldVnode,
			vnode,
			insertedVnodeQueue,
			ownerArray,
			index,
			removeOnly
		) {
			if (oldVnode === vnode) {
				return
			}

			if (isDef(vnode.elm) && isDef(ownerArray)) {
				// clone reused vnode
				vnode = ownerArray[index] = cloneVNode(vnode)
			}

			var elm = (vnode.elm = oldVnode.elm)

			if (isTrue(oldVnode.isAsyncPlaceholder)) {
				if (isDef(vnode.asyncFactory.resolved)) {
					hydrate(oldVnode.elm, vnode, insertedVnodeQueue)
				} else {
					vnode.isAsyncPlaceholder = true
				}
				return
			}

			// reuse element for static trees.
			// note we only do this if the vnode is cloned -
			// if the new node is not cloned it means the render functions have been
			// reset by the hot-reload-api and we need to do a proper re-render.
			if (
				isTrue(vnode.isStatic) &&
				isTrue(oldVnode.isStatic) &&
				vnode.key === oldVnode.key &&
				(isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
			) {
				vnode.componentInstance = oldVnode.componentInstance
				return
			}

			var i
			var data = vnode.data
			if (isDef(data) && isDef((i = data.hook)) && isDef((i = i.prepatch))) {
				i(oldVnode, vnode)
			}

			var oldCh = oldVnode.children
			var ch = vnode.children
			if (isDef(data) && isPatchable(vnode)) {
				for (i = 0; i < cbs.update.length; ++i) {
					cbs.update[i](oldVnode, vnode)
				}
				if (isDef((i = data.hook)) && isDef((i = i.update))) {
					i(oldVnode, vnode)
				}
			}
			if (isUndef(vnode.text)) {
				if (isDef(oldCh) && isDef(ch)) {
					if (oldCh !== ch) {
						updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly)
					}
				} else if (isDef(ch)) {
					{
						checkDuplicateKeys(ch)
					}
					if (isDef(oldVnode.text)) {
						nodeOps.setTextContent(elm, "")
					}
					addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue)
				} else if (isDef(oldCh)) {
					removeVnodes(oldCh, 0, oldCh.length - 1)
				} else if (isDef(oldVnode.text)) {
					nodeOps.setTextContent(elm, "")
				}
			} else if (oldVnode.text !== vnode.text) {
				nodeOps.setTextContent(elm, vnode.text)
			}
			if (isDef(data)) {
				if (isDef((i = data.hook)) && isDef((i = i.postpatch))) {
					i(oldVnode, vnode)
				}
			}
		}

		function invokeInsertHook(vnode, queue, initial) {
			// delay insert hooks for component root nodes, invoke them after the
			// element is really inserted
			if (isTrue(initial) && isDef(vnode.parent)) {
				vnode.parent.data.pendingInsert = queue
			} else {
				for (var i = 0; i < queue.length; ++i) {
					queue[i].data.hook.insert(queue[i])
				}
			}
		}

		var hydrationBailed = false
		// list of modules that can skip create hook during hydration because they
		// are already rendered on the client or has no need for initialization
		// Note: style is excluded because it relies on initial clone for future
		// deep updates (#7063).
		var isRenderedModule = makeMap("attrs,class,staticClass,staticStyle,key")

		// Note: this is a browser-only function so we can assume elms are DOM nodes.
		function hydrate(elm, vnode, insertedVnodeQueue, inVPre) {
			var i
			var tag = vnode.tag
			var data = vnode.data
			var children = vnode.children
			inVPre = inVPre || (data && data.pre)
			vnode.elm = elm

			if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
				vnode.isAsyncPlaceholder = true
				return true
			}
			// assert node match
			{
				if (!assertNodeMatch(elm, vnode, inVPre)) {
					return false
				}
			}
			if (isDef(data)) {
				if (isDef((i = data.hook)) && isDef((i = i.init))) {
					i(vnode, true /* hydrating */)
				}
				if (isDef((i = vnode.componentInstance))) {
					// child component. it should have hydrated its own tree.
					initComponent(vnode, insertedVnodeQueue)
					return true
				}
			}
			if (isDef(tag)) {
				if (isDef(children)) {
					// empty element, allow client to pick up and populate children
					if (!elm.hasChildNodes()) {
						createChildren(vnode, children, insertedVnodeQueue)
					} else {
						// v-html and domProps: innerHTML
						if (
							isDef((i = data)) &&
							isDef((i = i.domProps)) &&
							isDef((i = i.innerHTML))
						) {
							if (i !== elm.innerHTML) {
								/* istanbul ignore if */
								if (typeof console !== "undefined" && !hydrationBailed) {
									hydrationBailed = true
									console.warn("Parent: ", elm)
									console.warn("server innerHTML: ", i)
									console.warn("client innerHTML: ", elm.innerHTML)
								}
								return false
							}
						} else {
							// iterate and compare children lists
							var childrenMatch = true
							var childNode = elm.firstChild
							for (var i$1 = 0; i$1 < children.length; i$1++) {
								if (
									!childNode ||
									!hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)
								) {
									childrenMatch = false
									break
								}
								childNode = childNode.nextSibling
							}
							// if childNode is not null, it means the actual childNodes list is
							// longer than the virtual children list.
							if (!childrenMatch || childNode) {
								/* istanbul ignore if */
								if (typeof console !== "undefined" && !hydrationBailed) {
									hydrationBailed = true
									console.warn("Parent: ", elm)
									console.warn(
										"Mismatching childNodes vs. VNodes: ",
										elm.childNodes,
										children
									)
								}
								return false
							}
						}
					}
				}
				if (isDef(data)) {
					var fullInvoke = false
					for (var key in data) {
						if (!isRenderedModule(key)) {
							fullInvoke = true
							invokeCreateHooks(vnode, insertedVnodeQueue)
							break
						}
					}
					if (!fullInvoke && data["class"]) {
						// ensure collecting deps for deep class bindings for future updates
						traverse(data["class"])
					}
				}
			} else if (elm.data !== vnode.text) {
				elm.data = vnode.text
			}
			return true
		}

		function assertNodeMatch(node, vnode, inVPre) {
			if (isDef(vnode.tag)) {
				return (
					vnode.tag.indexOf("vue-component") === 0 ||
					(!isUnknownElement$$1(vnode, inVPre) &&
						vnode.tag.toLowerCase() ===
							(node.tagName && node.tagName.toLowerCase()))
				)
			} else {
				return node.nodeType === (vnode.isComment ? 8 : 3)
			}
		}

		return function patch(oldVnode, vnode, hydrating, removeOnly) {
			if (isUndef(vnode)) {
				if (isDef(oldVnode)) {
					invokeDestroyHook(oldVnode)
				}
				return
			}

			var isInitialPatch = false
			var insertedVnodeQueue = []

			if (isUndef(oldVnode)) {
				// empty mount (likely as component), create new root element
				isInitialPatch = true
				createElm(vnode, insertedVnodeQueue)
			} else {
				var isRealElement = isDef(oldVnode.nodeType)
				if (!isRealElement && sameVnode(oldVnode, vnode)) {
					// patch existing root node
					patchVnode(
						oldVnode,
						vnode,
						insertedVnodeQueue,
						null,
						null,
						removeOnly
					)
				} else {
					if (isRealElement) {
						// mounting to a real element
						// check if this is server-rendered content and if we can perform
						// a successful hydration.
						if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
							oldVnode.removeAttribute(SSR_ATTR)
							hydrating = true
						}
						if (isTrue(hydrating)) {
							if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
								invokeInsertHook(vnode, insertedVnodeQueue, true)
								return oldVnode
							} else {
								warn(
									"The client-side rendered virtual DOM tree is not matching " +
										"server-rendered content. This is likely caused by incorrect " +
										"HTML markup, for example nesting block-level elements inside " +
										"<p>, or missing <tbody>. Bailing hydration and performing " +
										"full client-side render."
								)
							}
						}
						// either not server-rendered, or hydration failed.
						// create an empty node and replace it
						oldVnode = emptyNodeAt(oldVnode)
					}

					// replacing existing element
					var oldElm = oldVnode.elm
					var parentElm = nodeOps.parentNode(oldElm)

					// create new node
					createElm(
						vnode,
						insertedVnodeQueue,
						// extremely rare edge case: do not insert if old element is in a
						// leaving transition. Only happens when combining transition +
						// keep-alive + HOCs. (#4590)
						oldElm._leaveCb ? null : parentElm,
						nodeOps.nextSibling(oldElm)
					)

					// update parent placeholder node element, recursively
					if (isDef(vnode.parent)) {
						var ancestor = vnode.parent
						var patchable = isPatchable(vnode)
						while (ancestor) {
							for (var i = 0; i < cbs.destroy.length; ++i) {
								cbs.destroy[i](ancestor)
							}
							ancestor.elm = vnode.elm
							if (patchable) {
								for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
									cbs.create[i$1](emptyNode, ancestor)
								}
								// #6513
								// invoke insert hooks that may have been merged by create hooks.
								// e.g. for directives that uses the "inserted" hook.
								var insert = ancestor.data.hook.insert
								if (insert.merged) {
									// start at index 1 to avoid re-invoking component mounted hook
									for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
										insert.fns[i$2]()
									}
								}
							} else {
								registerRef(ancestor)
							}
							ancestor = ancestor.parent
						}
					}

					// destroy old node
					if (isDef(parentElm)) {
						removeVnodes([oldVnode], 0, 0)
					} else if (isDef(oldVnode.tag)) {
						invokeDestroyHook(oldVnode)
					}
				}
			}

			invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch)
			return vnode.elm
		}
	}

	/*  */

	var directives = {
		create: updateDirectives,
		update: updateDirectives,
		destroy: function unbindDirectives(vnode) {
			updateDirectives(vnode, emptyNode)
		},
	}

	function updateDirectives(oldVnode, vnode) {
		if (oldVnode.data.directives || vnode.data.directives) {
			_update(oldVnode, vnode)
		}
	}

	function _update(oldVnode, vnode) {
		var isCreate = oldVnode === emptyNode
		var isDestroy = vnode === emptyNode
		var oldDirs = normalizeDirectives$1(
			oldVnode.data.directives,
			oldVnode.context
		)
		var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context)

		var dirsWithInsert = []
		var dirsWithPostpatch = []

		var key, oldDir, dir
		for (key in newDirs) {
			oldDir = oldDirs[key]
			dir = newDirs[key]
			if (!oldDir) {
				// new directive, bind
				callHook$1(dir, "bind", vnode, oldVnode)
				if (dir.def && dir.def.inserted) {
					dirsWithInsert.push(dir)
				}
			} else {
				// existing directive, update
				dir.oldValue = oldDir.value
				dir.oldArg = oldDir.arg
				callHook$1(dir, "update", vnode, oldVnode)
				if (dir.def && dir.def.componentUpdated) {
					dirsWithPostpatch.push(dir)
				}
			}
		}

		if (dirsWithInsert.length) {
			var callInsert = function () {
				for (var i = 0; i < dirsWithInsert.length; i++) {
					callHook$1(dirsWithInsert[i], "inserted", vnode, oldVnode)
				}
			}
			if (isCreate) {
				mergeVNodeHook(vnode, "insert", callInsert)
			} else {
				callInsert()
			}
		}

		if (dirsWithPostpatch.length) {
			mergeVNodeHook(vnode, "postpatch", function () {
				for (var i = 0; i < dirsWithPostpatch.length; i++) {
					callHook$1(dirsWithPostpatch[i], "componentUpdated", vnode, oldVnode)
				}
			})
		}

		if (!isCreate) {
			for (key in oldDirs) {
				if (!newDirs[key]) {
					// no longer present, unbind
					callHook$1(oldDirs[key], "unbind", oldVnode, oldVnode, isDestroy)
				}
			}
		}
	}

	var emptyModifiers = Object.create(null)

	function normalizeDirectives$1(dirs, vm) {
		var res = Object.create(null)
		if (!dirs) {
			// $flow-disable-line
			return res
		}
		var i, dir
		for (i = 0; i < dirs.length; i++) {
			dir = dirs[i]
			if (!dir.modifiers) {
				// $flow-disable-line
				dir.modifiers = emptyModifiers
			}
			res[getRawDirName(dir)] = dir
			dir.def = resolveAsset(vm.$options, "directives", dir.name, true)
		}
		// $flow-disable-line
		return res
	}

	function getRawDirName(dir) {
		return (
			dir.rawName || dir.name + "." + Object.keys(dir.modifiers || {}).join(".")
		)
	}

	function callHook$1(dir, hook, vnode, oldVnode, isDestroy) {
		var fn = dir.def && dir.def[hook]
		if (fn) {
			try {
				fn(vnode.elm, dir, vnode, oldVnode, isDestroy)
			} catch (e) {
				handleError(
					e,
					vnode.context,
					"directive " + dir.name + " " + hook + " hook"
				)
			}
		}
	}

	var baseModules = [ref, directives]

	/*  */

	function updateAttrs(oldVnode, vnode) {
		var opts = vnode.componentOptions
		if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
			return
		}
		if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
			return
		}
		var key, cur, old
		var elm = vnode.elm
		var oldAttrs = oldVnode.data.attrs || {}
		var attrs = vnode.data.attrs || {}
		// clone observed objects, as the user probably wants to mutate it
		if (isDef(attrs.__ob__)) {
			attrs = vnode.data.attrs = extend({}, attrs)
		}

		for (key in attrs) {
			cur = attrs[key]
			old = oldAttrs[key]
			if (old !== cur) {
				setAttr(elm, key, cur)
			}
		}
		// #4391: in IE9, setting type can reset value for input[type=radio]
		// #6666: IE/Edge forces progress value down to 1 before setting a max
		/* istanbul ignore if */
		if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
			setAttr(elm, "value", attrs.value)
		}
		for (key in oldAttrs) {
			if (isUndef(attrs[key])) {
				if (isXlink(key)) {
					elm.removeAttributeNS(xlinkNS, getXlinkProp(key))
				} else if (!isEnumeratedAttr(key)) {
					elm.removeAttribute(key)
				}
			}
		}
	}

	function setAttr(el, key, value) {
		if (el.tagName.indexOf("-") > -1) {
			baseSetAttr(el, key, value)
		} else if (isBooleanAttr(key)) {
			// set attribute for blank value
			// e.g. <option disabled>Select one</option>
			if (isFalsyAttrValue(value)) {
				el.removeAttribute(key)
			} else {
				// technically allowfullscreen is a boolean attribute for <iframe>,
				// but Flash expects a value of "true" when used on <embed> tag
				value =
					key === "allowfullscreen" && el.tagName === "EMBED" ? "true" : key
				el.setAttribute(key, value)
			}
		} else if (isEnumeratedAttr(key)) {
			el.setAttribute(key, convertEnumeratedValue(key, value))
		} else if (isXlink(key)) {
			if (isFalsyAttrValue(value)) {
				el.removeAttributeNS(xlinkNS, getXlinkProp(key))
			} else {
				el.setAttributeNS(xlinkNS, key, value)
			}
		} else {
			baseSetAttr(el, key, value)
		}
	}

	function baseSetAttr(el, key, value) {
		if (isFalsyAttrValue(value)) {
			el.removeAttribute(key)
		} else {
			// #7138: IE10 & 11 fires input event when setting placeholder on
			// <textarea>... block the first input event and remove the blocker
			// immediately.
			/* istanbul ignore if */
			if (
				isIE &&
				!isIE9 &&
				el.tagName === "TEXTAREA" &&
				key === "placeholder" &&
				value !== "" &&
				!el.__ieph
			) {
				var blocker = function (e) {
					e.stopImmediatePropagation()
					el.removeEventListener("input", blocker)
				}
				el.addEventListener("input", blocker)
				// $flow-disable-line
				el.__ieph = true /* IE placeholder patched */
			}
			el.setAttribute(key, value)
		}
	}

	var attrs = {
		create: updateAttrs,
		update: updateAttrs,
	}

	/*  */

	function updateClass(oldVnode, vnode) {
		var el = vnode.elm
		var data = vnode.data
		var oldData = oldVnode.data
		if (
			isUndef(data.staticClass) &&
			isUndef(data.class) &&
			(isUndef(oldData) ||
				(isUndef(oldData.staticClass) && isUndef(oldData.class)))
		) {
			return
		}

		var cls = genClassForVnode(vnode)

		// handle transition classes
		var transitionClass = el._transitionClasses
		if (isDef(transitionClass)) {
			cls = concat(cls, stringifyClass(transitionClass))
		}

		// set the class
		if (cls !== el._prevClass) {
			el.setAttribute("class", cls)
			el._prevClass = cls
		}
	}

	var klass = {
		create: updateClass,
		update: updateClass,
	}

	/*  */

	var validDivisionCharRE = /[\w).+\-_$\]]/

	function parseFilters(exp) {
		var inSingle = false
		var inDouble = false
		var inTemplateString = false
		var inRegex = false
		var curly = 0
		var square = 0
		var paren = 0
		var lastFilterIndex = 0
		var c, prev, i, expression, filters

		for (i = 0; i < exp.length; i++) {
			prev = c
			c = exp.charCodeAt(i)
			if (inSingle) {
				if (c === 0x27 && prev !== 0x5c) {
					inSingle = false
				}
			} else if (inDouble) {
				if (c === 0x22 && prev !== 0x5c) {
					inDouble = false
				}
			} else if (inTemplateString) {
				if (c === 0x60 && prev !== 0x5c) {
					inTemplateString = false
				}
			} else if (inRegex) {
				if (c === 0x2f && prev !== 0x5c) {
					inRegex = false
				}
			} else if (
				c === 0x7c && // pipe
				exp.charCodeAt(i + 1) !== 0x7c &&
				exp.charCodeAt(i - 1) !== 0x7c &&
				!curly &&
				!square &&
				!paren
			) {
				if (expression === undefined) {
					// first filter, end of expression
					lastFilterIndex = i + 1
					expression = exp.slice(0, i).trim()
				} else {
					pushFilter()
				}
			} else {
				switch (c) {
					case 0x22:
						inDouble = true
						break // "
					case 0x27:
						inSingle = true
						break // '
					case 0x60:
						inTemplateString = true
						break // `
					case 0x28:
						paren++
						break // (
					case 0x29:
						paren--
						break // )
					case 0x5b:
						square++
						break // [
					case 0x5d:
						square--
						break // ]
					case 0x7b:
						curly++
						break // {
					case 0x7d:
						curly--
						break // }
				}
				if (c === 0x2f) {
					// /
					var j = i - 1
					var p = void 0
					// find first non-whitespace prev char
					for (; j >= 0; j--) {
						p = exp.charAt(j)
						if (p !== " ") {
							break
						}
					}
					if (!p || !validDivisionCharRE.test(p)) {
						inRegex = true
					}
				}
			}
		}

		if (expression === undefined) {
			expression = exp.slice(0, i).trim()
		} else if (lastFilterIndex !== 0) {
			pushFilter()
		}

		function pushFilter() {
			;(filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim())
			lastFilterIndex = i + 1
		}

		if (filters) {
			for (i = 0; i < filters.length; i++) {
				expression = wrapFilter(expression, filters[i])
			}
		}

		return expression
	}

	function wrapFilter(exp, filter) {
		var i = filter.indexOf("(")
		if (i < 0) {
			// _f: resolveFilter
			return '_f("' + filter + '")(' + exp + ")"
		} else {
			var name = filter.slice(0, i)
			var args = filter.slice(i + 1)
			return '_f("' + name + '")(' + exp + (args !== ")" ? "," + args : args)
		}
	}

	/*  */

	/* eslint-disable no-unused-vars */
	function baseWarn(msg, range) {
		console.error("[Vue compiler]: " + msg)
	}
	/* eslint-enable no-unused-vars */

	function pluckModuleFunction(modules, key) {
		return modules
			? modules
					.map(function (m) {
						return m[key]
					})
					.filter(function (_) {
						return _
					})
			: []
	}

	function addProp(el, name, value, range, dynamic) {
		;(el.props || (el.props = [])).push(
			rangeSetItem({ name: name, value: value, dynamic: dynamic }, range)
		)
		el.plain = false
	}

	function addAttr(el, name, value, range, dynamic) {
		var attrs = dynamic
			? el.dynamicAttrs || (el.dynamicAttrs = [])
			: el.attrs || (el.attrs = [])
		attrs.push(
			rangeSetItem({ name: name, value: value, dynamic: dynamic }, range)
		)
		el.plain = false
	}

	// add a raw attr (use this in preTransforms)
	function addRawAttr(el, name, value, range) {
		el.attrsMap[name] = value
		el.attrsList.push(rangeSetItem({ name: name, value: value }, range))
	}

	function addDirective(
		el,
		name,
		rawName,
		value,
		arg,
		isDynamicArg,
		modifiers,
		range
	) {
		;(el.directives || (el.directives = [])).push(
			rangeSetItem(
				{
					name: name,
					rawName: rawName,
					value: value,
					arg: arg,
					isDynamicArg: isDynamicArg,
					modifiers: modifiers,
				},
				range
			)
		)
		el.plain = false
	}

	function prependModifierMarker(symbol, name, dynamic) {
		return dynamic ? "_p(" + name + ',"' + symbol + '")' : symbol + name // mark the event as captured
	}

	function addHandler(
		el,
		name,
		value,
		modifiers,
		important,
		warn,
		range,
		dynamic
	) {
		modifiers = modifiers || emptyObject
		// warn prevent and passive modifier
		/* istanbul ignore if */
		if (warn && modifiers.prevent && modifiers.passive) {
			warn(
				"passive and prevent can't be used together. " +
					"Passive handler can't prevent default event.",
				range
			)
		}

		// normalize click.right and click.middle since they don't actually fire
		// this is technically browser-specific, but at least for now browsers are
		// the only target envs that have right/middle clicks.
		if (modifiers.right) {
			if (dynamic) {
				name = "(" + name + ")==='click'?'contextmenu':(" + name + ")"
			} else if (name === "click") {
				name = "contextmenu"
				delete modifiers.right
			}
		} else if (modifiers.middle) {
			if (dynamic) {
				name = "(" + name + ")==='click'?'mouseup':(" + name + ")"
			} else if (name === "click") {
				name = "mouseup"
			}
		}

		// check capture modifier
		if (modifiers.capture) {
			delete modifiers.capture
			name = prependModifierMarker("!", name, dynamic)
		}
		if (modifiers.once) {
			delete modifiers.once
			name = prependModifierMarker("~", name, dynamic)
		}
		/* istanbul ignore if */
		if (modifiers.passive) {
			delete modifiers.passive
			name = prependModifierMarker("&", name, dynamic)
		}

		var events
		if (modifiers.native) {
			delete modifiers.native
			events = el.nativeEvents || (el.nativeEvents = {})
		} else {
			events = el.events || (el.events = {})
		}

		var newHandler = rangeSetItem(
			{ value: value.trim(), dynamic: dynamic },
			range
		)
		if (modifiers !== emptyObject) {
			newHandler.modifiers = modifiers
		}

		var handlers = events[name]
		/* istanbul ignore if */
		if (Array.isArray(handlers)) {
			important ? handlers.unshift(newHandler) : handlers.push(newHandler)
		} else if (handlers) {
			events[name] = important ? [newHandler, handlers] : [handlers, newHandler]
		} else {
			events[name] = newHandler
		}

		el.plain = false
	}

	function getRawBindingAttr(el, name) {
		return (
			el.rawAttrsMap[":" + name] ||
			el.rawAttrsMap["v-bind:" + name] ||
			el.rawAttrsMap[name]
		)
	}

	function getBindingAttr(el, name, getStatic) {
		var dynamicValue =
			getAndRemoveAttr(el, ":" + name) || getAndRemoveAttr(el, "v-bind:" + name)
		if (dynamicValue != null) {
			return parseFilters(dynamicValue)
		} else if (getStatic !== false) {
			var staticValue = getAndRemoveAttr(el, name)
			if (staticValue != null) {
				return JSON.stringify(staticValue)
			}
		}
	}

	// note: this only removes the attr from the Array (attrsList) so that it
	// doesn't get processed by processAttrs.
	// By default it does NOT remove it from the map (attrsMap) because the map is
	// needed during codegen.
	function getAndRemoveAttr(el, name, removeFromMap) {
		var val
		if ((val = el.attrsMap[name]) != null) {
			var list = el.attrsList
			for (var i = 0, l = list.length; i < l; i++) {
				if (list[i].name === name) {
					list.splice(i, 1)
					break
				}
			}
		}
		if (removeFromMap) {
			delete el.attrsMap[name]
		}
		return val
	}

	function getAndRemoveAttrByRegex(el, name) {
		var list = el.attrsList
		for (var i = 0, l = list.length; i < l; i++) {
			var attr = list[i]
			if (name.test(attr.name)) {
				list.splice(i, 1)
				return attr
			}
		}
	}

	function rangeSetItem(item, range) {
		if (range) {
			if (range.start != null) {
				item.start = range.start
			}
			if (range.end != null) {
				item.end = range.end
			}
		}
		return item
	}

	/*  */

	/**
	 * Cross-platform code generation for component v-model
	 */
	function genComponentModel(el, value, modifiers) {
		var ref = modifiers || {}
		var number = ref.number
		var trim = ref.trim

		var baseValueExpression = "$$v"
		var valueExpression = baseValueExpression
		if (trim) {
			valueExpression =
				"(typeof " +
				baseValueExpression +
				" === 'string'" +
				"? " +
				baseValueExpression +
				".trim()" +
				": " +
				baseValueExpression +
				")"
		}
		if (number) {
			valueExpression = "_n(" + valueExpression + ")"
		}
		var assignment = genAssignmentCode(value, valueExpression)

		el.model = {
			value: "(" + value + ")",
			expression: JSON.stringify(value),
			callback: "function (" + baseValueExpression + ") {" + assignment + "}",
		}
	}

	/**
	 * Cross-platform codegen helper for generating v-model value assignment code.
	 */
	function genAssignmentCode(value, assignment) {
		var res = parseModel(value)
		if (res.key === null) {
			return value + "=" + assignment
		} else {
			return "$set(" + res.exp + ", " + res.key + ", " + assignment + ")"
		}
	}

	/**
	 * Parse a v-model expression into a base path and a final key segment.
	 * Handles both dot-path and possible square brackets.
	 *
	 * Possible cases:
	 *
	 * - test
	 * - test[key]
	 * - test[test1[key]]
	 * - test["a"][key]
	 * - xxx.test[a[a].test1[key]]
	 * - test.xxx.a["asa"][test1[key]]
	 *
	 */

	var len, str, chr, index$1, expressionPos, expressionEndPos

	function parseModel(val) {
		// Fix https://github.com/vuejs/vue/pull/7730
		// allow v-model="obj.val " (trailing whitespace)
		val = val.trim()
		len = val.length

		if (val.indexOf("[") < 0 || val.lastIndexOf("]") < len - 1) {
			index$1 = val.lastIndexOf(".")
			if (index$1 > -1) {
				return {
					exp: val.slice(0, index$1),
					key: '"' + val.slice(index$1 + 1) + '"',
				}
			} else {
				return {
					exp: val,
					key: null,
				}
			}
		}

		str = val
		index$1 = expressionPos = expressionEndPos = 0

		while (!eof()) {
			chr = next()
			/* istanbul ignore if */
			if (isStringStart(chr)) {
				parseString(chr)
			} else if (chr === 0x5b) {
				parseBracket(chr)
			}
		}

		return {
			exp: val.slice(0, expressionPos),
			key: val.slice(expressionPos + 1, expressionEndPos),
		}
	}

	function next() {
		return str.charCodeAt(++index$1)
	}

	function eof() {
		return index$1 >= len
	}

	function isStringStart(chr) {
		return chr === 0x22 || chr === 0x27
	}

	function parseBracket(chr) {
		var inBracket = 1
		expressionPos = index$1
		while (!eof()) {
			chr = next()
			if (isStringStart(chr)) {
				parseString(chr)
				continue
			}
			if (chr === 0x5b) {
				inBracket++
			}
			if (chr === 0x5d) {
				inBracket--
			}
			if (inBracket === 0) {
				expressionEndPos = index$1
				break
			}
		}
	}

	function parseString(chr) {
		var stringQuote = chr
		while (!eof()) {
			chr = next()
			if (chr === stringQuote) {
				break
			}
		}
	}

	/*  */

	var warn$1

	// in some cases, the event used has to be determined at runtime
	// so we used some reserved tokens during compile.
	var RANGE_TOKEN = "__r"
	var CHECKBOX_RADIO_TOKEN = "__c"

	function model(el, dir, _warn) {
		warn$1 = _warn
		var value = dir.value
		var modifiers = dir.modifiers
		var tag = el.tag
		var type = el.attrsMap.type

		{
			// inputs with type="file" are read only and setting the input's
			// value will throw an error.
			if (tag === "input" && type === "file") {
				warn$1(
					"<" +
						el.tag +
						' v-model="' +
						value +
						'" type="file">:\n' +
						"File inputs are read only. Use a v-on:change listener instead.",
					el.rawAttrsMap["v-model"]
				)
			}
		}

		if (el.component) {
			genComponentModel(el, value, modifiers)
			// component v-model doesn't need extra runtime
			return false
		} else if (tag === "select") {
			genSelect(el, value, modifiers)
		} else if (tag === "input" && type === "checkbox") {
			genCheckboxModel(el, value, modifiers)
		} else if (tag === "input" && type === "radio") {
			genRadioModel(el, value, modifiers)
		} else if (tag === "input" || tag === "textarea") {
			genDefaultModel(el, value, modifiers)
		} else if (!config.isReservedTag(tag)) {
			genComponentModel(el, value, modifiers)
			// component v-model doesn't need extra runtime
			return false
		} else {
			warn$1(
				"<" +
					el.tag +
					' v-model="' +
					value +
					'">: ' +
					"v-model is not supported on this element type. " +
					"If you are working with contenteditable, it's recommended to " +
					"wrap a library dedicated for that purpose inside a custom component.",
				el.rawAttrsMap["v-model"]
			)
		}

		// ensure runtime directive metadata
		return true
	}

	function genCheckboxModel(el, value, modifiers) {
		var number = modifiers && modifiers.number
		var valueBinding = getBindingAttr(el, "value") || "null"
		var trueValueBinding = getBindingAttr(el, "true-value") || "true"
		var falseValueBinding = getBindingAttr(el, "false-value") || "false"
		addProp(
			el,
			"checked",
			"Array.isArray(" +
				value +
				")" +
				"?_i(" +
				value +
				"," +
				valueBinding +
				")>-1" +
				(trueValueBinding === "true"
					? ":(" + value + ")"
					: ":_q(" + value + "," + trueValueBinding + ")")
		)
		addHandler(
			el,
			"change",
			"var $$a=" +
				value +
				"," +
				"$$el=$event.target," +
				"$$c=$$el.checked?(" +
				trueValueBinding +
				"):(" +
				falseValueBinding +
				");" +
				"if(Array.isArray($$a)){" +
				"var $$v=" +
				(number ? "_n(" + valueBinding + ")" : valueBinding) +
				"," +
				"$$i=_i($$a,$$v);" +
				"if($$el.checked){$$i<0&&(" +
				genAssignmentCode(value, "$$a.concat([$$v])") +
				")}" +
				"else{$$i>-1&&(" +
				genAssignmentCode(value, "$$a.slice(0,$$i).concat($$a.slice($$i+1))") +
				")}" +
				"}else{" +
				genAssignmentCode(value, "$$c") +
				"}",
			null,
			true
		)
	}

	function genRadioModel(el, value, modifiers) {
		var number = modifiers && modifiers.number
		var valueBinding = getBindingAttr(el, "value") || "null"
		valueBinding = number ? "_n(" + valueBinding + ")" : valueBinding
		addProp(el, "checked", "_q(" + value + "," + valueBinding + ")")
		addHandler(el, "change", genAssignmentCode(value, valueBinding), null, true)
	}

	function genSelect(el, value, modifiers) {
		var number = modifiers && modifiers.number
		var selectedVal =
			"Array.prototype.filter" +
			".call($event.target.options,function(o){return o.selected})" +
			'.map(function(o){var val = "_value" in o ? o._value : o.value;' +
			"return " +
			(number ? "_n(val)" : "val") +
			"})"

		var assignment = "$event.target.multiple ? $$selectedVal : $$selectedVal[0]"
		var code = "var $$selectedVal = " + selectedVal + ";"
		code = code + " " + genAssignmentCode(value, assignment)
		addHandler(el, "change", code, null, true)
	}

	function genDefaultModel(el, value, modifiers) {
		var type = el.attrsMap.type

		// warn if v-bind:value conflicts with v-model
		// except for inputs with v-bind:type
		{
			var value$1 = el.attrsMap["v-bind:value"] || el.attrsMap[":value"]
			var typeBinding = el.attrsMap["v-bind:type"] || el.attrsMap[":type"]
			if (value$1 && !typeBinding) {
				var binding = el.attrsMap["v-bind:value"] ? "v-bind:value" : ":value"
				warn$1(
					binding +
						'="' +
						value$1 +
						'" conflicts with v-model on the same element ' +
						"because the latter already expands to a value binding internally",
					el.rawAttrsMap[binding]
				)
			}
		}

		var ref = modifiers || {}
		var lazy = ref.lazy
		var number = ref.number
		var trim = ref.trim
		var needCompositionGuard = !lazy && type !== "range"
		var event = lazy ? "change" : type === "range" ? RANGE_TOKEN : "input"

		var valueExpression = "$event.target.value"
		if (trim) {
			valueExpression = "$event.target.value.trim()"
		}
		if (number) {
			valueExpression = "_n(" + valueExpression + ")"
		}

		var code = genAssignmentCode(value, valueExpression)
		if (needCompositionGuard) {
			code = "if($event.target.composing)return;" + code
		}

		addProp(el, "value", "(" + value + ")")
		addHandler(el, event, code, null, true)
		if (trim || number) {
			addHandler(el, "blur", "$forceUpdate()")
		}
	}

	/*  */

	// normalize v-model event tokens that can only be determined at runtime.
	// it's important to place the event as the first in the array because
	// the whole point is ensuring the v-model callback gets called before
	// user-attached handlers.
	function normalizeEvents(on) {
		/* istanbul ignore if */
		if (isDef(on[RANGE_TOKEN])) {
			// IE input[type=range] only supports `change` event
			var event = isIE ? "change" : "input"
			on[event] = [].concat(on[RANGE_TOKEN], on[event] || [])
			delete on[RANGE_TOKEN]
		}
		// This was originally intended to fix #4521 but no longer necessary
		// after 2.5. Keeping it for backwards compat with generated code from < 2.4
		/* istanbul ignore if */
		if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
			on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || [])
			delete on[CHECKBOX_RADIO_TOKEN]
		}
	}

	var target$1

	function createOnceHandler$1(event, handler, capture) {
		var _target = target$1 // save current target element in closure
		return function onceHandler() {
			var res = handler.apply(null, arguments)
			if (res !== null) {
				remove$2(event, onceHandler, capture, _target)
			}
		}
	}

	// #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
	// implementation and does not fire microtasks in between event propagation, so
	// safe to exclude.
	var useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53)

	function add$1(name, handler, capture, passive) {
		// async edge case #6566: inner click event triggers patch, event handler
		// attached to outer element during patch, and triggered again. This
		// happens because browsers fire microtask ticks between event propagation.
		// the solution is simple: we save the timestamp when a handler is attached,
		// and the handler would only fire if the event passed to it was fired
		// AFTER it was attached.
		if (useMicrotaskFix) {
			var attachedTimestamp = currentFlushTimestamp
			var original = handler
			handler = original._wrapper = function (e) {
				if (
					// no bubbling, should always fire.
					// this is just a safety net in case event.timeStamp is unreliable in
					// certain weird environments...
					e.target === e.currentTarget ||
					// event is fired after handler attachment
					e.timeStamp >= attachedTimestamp ||
					// bail for environments that have buggy event.timeStamp implementations
					// #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState
					// #9681 QtWebEngine event.timeStamp is negative value
					e.timeStamp <= 0 ||
					// #9448 bail if event is fired in another document in a multi-page
					// electron/nw.js app, since event.timeStamp will be using a different
					// starting reference
					e.target.ownerDocument !== document
				) {
					return original.apply(this, arguments)
				}
			}
		}
		target$1.addEventListener(
			name,
			handler,
			supportsPassive ? { capture: capture, passive: passive } : capture
		)
	}

	function remove$2(name, handler, capture, _target) {
		;(_target || target$1).removeEventListener(
			name,
			handler._wrapper || handler,
			capture
		)
	}

	function updateDOMListeners(oldVnode, vnode) {
		if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
			return
		}
		var on = vnode.data.on || {}
		var oldOn = oldVnode.data.on || {}
		target$1 = vnode.elm
		normalizeEvents(on)
		updateListeners(
			on,
			oldOn,
			add$1,
			remove$2,
			createOnceHandler$1,
			vnode.context
		)
		target$1 = undefined
	}

	var events = {
		create: updateDOMListeners,
		update: updateDOMListeners,
	}

	/*  */

	var svgContainer

	function updateDOMProps(oldVnode, vnode) {
		if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
			return
		}
		var key, cur
		var elm = vnode.elm
		var oldProps = oldVnode.data.domProps || {}
		var props = vnode.data.domProps || {}
		// clone observed objects, as the user probably wants to mutate it
		if (isDef(props.__ob__)) {
			props = vnode.data.domProps = extend({}, props)
		}

		for (key in oldProps) {
			if (!(key in props)) {
				elm[key] = ""
			}
		}

		for (key in props) {
			cur = props[key]
			// ignore children if the node has textContent or innerHTML,
			// as these will throw away existing DOM nodes and cause removal errors
			// on subsequent patches (#3360)
			if (key === "textContent" || key === "innerHTML") {
				if (vnode.children) {
					vnode.children.length = 0
				}
				if (cur === oldProps[key]) {
					continue
				}
				// #6601 work around Chrome version <= 55 bug where single textNode
				// replaced by innerHTML/textContent retains its parentNode property
				if (elm.childNodes.length === 1) {
					elm.removeChild(elm.childNodes[0])
				}
			}

			if (key === "value" && elm.tagName !== "PROGRESS") {
				// store value as _value as well since
				// non-string values will be stringified
				elm._value = cur
				// avoid resetting cursor position when value is the same
				var strCur = isUndef(cur) ? "" : String(cur)
				if (shouldUpdateValue(elm, strCur)) {
					elm.value = strCur
				}
			} else if (
				key === "innerHTML" &&
				isSVG(elm.tagName) &&
				isUndef(elm.innerHTML)
			) {
				// IE doesn't support innerHTML for SVG elements
				svgContainer = svgContainer || document.createElement("div")
				svgContainer.innerHTML = "<svg>" + cur + "</svg>"
				var svg = svgContainer.firstChild
				while (elm.firstChild) {
					elm.removeChild(elm.firstChild)
				}
				while (svg.firstChild) {
					elm.appendChild(svg.firstChild)
				}
			} else if (
				// skip the update if old and new VDOM state is the same.
				// `value` is handled separately because the DOM value may be temporarily
				// out of sync with VDOM state due to focus, composition and modifiers.
				// This  #4521 by skipping the unnecessary `checked` update.
				cur !== oldProps[key]
			) {
				// some property updates can throw
				// e.g. `value` on <progress> w/ non-finite value
				try {
					elm[key] = cur
				} catch (e) {}
			}
		}
	}

	// check platforms/web/util/attrs.js acceptValue

	function shouldUpdateValue(elm, checkVal) {
		return (
			!elm.composing &&
			(elm.tagName === "OPTION" ||
				isNotInFocusAndDirty(elm, checkVal) ||
				isDirtyWithModifiers(elm, checkVal))
		)
	}

	function isNotInFocusAndDirty(elm, checkVal) {
		// return true when textbox (.number and .trim) loses focus and its value is
		// not equal to the updated value
		var notInFocus = true
		// #6157
		// work around IE bug when accessing document.activeElement in an iframe
		try {
			notInFocus = document.activeElement !== elm
		} catch (e) {}
		return notInFocus && elm.value !== checkVal
	}

	function isDirtyWithModifiers(elm, newVal) {
		var value = elm.value
		var modifiers = elm._vModifiers // injected by v-model runtime
		if (isDef(modifiers)) {
			if (modifiers.number) {
				return toNumber(value) !== toNumber(newVal)
			}
			if (modifiers.trim) {
				return value.trim() !== newVal.trim()
			}
		}
		return value !== newVal
	}

	var domProps = {
		create: updateDOMProps,
		update: updateDOMProps,
	}

	/*  */

	var parseStyleText = cached(function (cssText) {
		var res = {}
		var listDelimiter = /;(?![^(]*\))/g
		var propertyDelimiter = /:(.+)/
		cssText.split(listDelimiter).forEach(function (item) {
			if (item) {
				var tmp = item.split(propertyDelimiter)
				tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim())
			}
		})
		return res
	})

	// merge static and dynamic style data on the same vnode
	function normalizeStyleData(data) {
		var style = normalizeStyleBinding(data.style)
		// static style is pre-processed into an object during compilation
		// and is always a fresh object, so it's safe to merge into it
		return data.staticStyle ? extend(data.staticStyle, style) : style
	}

	// normalize possible array / string values into Object
	function normalizeStyleBinding(bindingStyle) {
		if (Array.isArray(bindingStyle)) {
			return toObject(bindingStyle)
		}
		if (typeof bindingStyle === "string") {
			return parseStyleText(bindingStyle)
		}
		return bindingStyle
	}

	/**
	 * parent component style should be after child's
	 * so that parent component's style could override it
	 */
	function getStyle(vnode, checkChild) {
		var res = {}
		var styleData

		if (checkChild) {
			var childNode = vnode
			while (childNode.componentInstance) {
				childNode = childNode.componentInstance._vnode
				if (
					childNode &&
					childNode.data &&
					(styleData = normalizeStyleData(childNode.data))
				) {
					extend(res, styleData)
				}
			}
		}

		if ((styleData = normalizeStyleData(vnode.data))) {
			extend(res, styleData)
		}

		var parentNode = vnode
		while ((parentNode = parentNode.parent)) {
			if (
				parentNode.data &&
				(styleData = normalizeStyleData(parentNode.data))
			) {
				extend(res, styleData)
			}
		}
		return res
	}

	/*  */

	var cssVarRE = /^--/
	var importantRE = /\s*!important$/
	var setProp = function (el, name, val) {
		/* istanbul ignore if */
		if (cssVarRE.test(name)) {
			el.style.setProperty(name, val)
		} else if (importantRE.test(val)) {
			el.style.setProperty(
				hyphenate(name),
				val.replace(importantRE, ""),
				"important"
			)
		} else {
			var normalizedName = normalize(name)
			if (Array.isArray(val)) {
				// Support values array created by autoprefixer, e.g.
				// {display: ["-webkit-box", "-ms-flexbox", "flex"]}
				// Set them one by one, and the browser will only set those it can recognize
				for (var i = 0, len = val.length; i < len; i++) {
					el.style[normalizedName] = val[i]
				}
			} else {
				el.style[normalizedName] = val
			}
		}
	}

	var vendorNames = ["Webkit", "Moz", "ms"]

	var emptyStyle
	var normalize = cached(function (prop) {
		emptyStyle = emptyStyle || document.createElement("div").style
		prop = camelize(prop)
		if (prop !== "filter" && prop in emptyStyle) {
			return prop
		}
		var capName = prop.charAt(0).toUpperCase() + prop.slice(1)
		for (var i = 0; i < vendorNames.length; i++) {
			var name = vendorNames[i] + capName
			if (name in emptyStyle) {
				return name
			}
		}
	})

	function updateStyle(oldVnode, vnode) {
		var data = vnode.data
		var oldData = oldVnode.data

		if (
			isUndef(data.staticStyle) &&
			isUndef(data.style) &&
			isUndef(oldData.staticStyle) &&
			isUndef(oldData.style)
		) {
			return
		}

		var cur, name
		var el = vnode.elm
		var oldStaticStyle = oldData.staticStyle
		var oldStyleBinding = oldData.normalizedStyle || oldData.style || {}

		// if static style exists, stylebinding already merged into it when doing normalizeStyleData
		var oldStyle = oldStaticStyle || oldStyleBinding

		var style = normalizeStyleBinding(vnode.data.style) || {}

		// store normalized style under a different key for next diff
		// make sure to clone it if it's reactive, since the user likely wants
		// to mutate it.
		vnode.data.normalizedStyle = isDef(style.__ob__) ? extend({}, style) : style

		var newStyle = getStyle(vnode, true)

		for (name in oldStyle) {
			if (isUndef(newStyle[name])) {
				setProp(el, name, "")
			}
		}
		for (name in newStyle) {
			cur = newStyle[name]
			if (cur !== oldStyle[name]) {
				// ie9 setting to null has no effect, must use empty string
				setProp(el, name, cur == null ? "" : cur)
			}
		}
	}

	var style = {
		create: updateStyle,
		update: updateStyle,
	}

	/*  */

	var whitespaceRE = /\s+/

	/**
	 * Add class with compatibility for SVG since classList is not supported on
	 * SVG elements in IE
	 */
	function addClass(el, cls) {
		/* istanbul ignore if */
		if (!cls || !(cls = cls.trim())) {
			return
		}

		/* istanbul ignore else */
		if (el.classList) {
			if (cls.indexOf(" ") > -1) {
				cls.split(whitespaceRE).forEach(function (c) {
					return el.classList.add(c)
				})
			} else {
				el.classList.add(cls)
			}
		} else {
			var cur = " " + (el.getAttribute("class") || "") + " "
			if (cur.indexOf(" " + cls + " ") < 0) {
				el.setAttribute("class", (cur + cls).trim())
			}
		}
	}

	/**
	 * Remove class with compatibility for SVG since classList is not supported on
	 * SVG elements in IE
	 */
	function removeClass(el, cls) {
		/* istanbul ignore if */
		if (!cls || !(cls = cls.trim())) {
			return
		}

		/* istanbul ignore else */
		if (el.classList) {
			if (cls.indexOf(" ") > -1) {
				cls.split(whitespaceRE).forEach(function (c) {
					return el.classList.remove(c)
				})
			} else {
				el.classList.remove(cls)
			}
			if (!el.classList.length) {
				el.removeAttribute("class")
			}
		} else {
			var cur = " " + (el.getAttribute("class") || "") + " "
			var tar = " " + cls + " "
			while (cur.indexOf(tar) >= 0) {
				cur = cur.replace(tar, " ")
			}
			cur = cur.trim()
			if (cur) {
				el.setAttribute("class", cur)
			} else {
				el.removeAttribute("class")
			}
		}
	}

	/*  */

	function resolveTransition(def$$1) {
		if (!def$$1) {
			return
		}
		/* istanbul ignore else */
		if (typeof def$$1 === "object") {
			var res = {}
			if (def$$1.css !== false) {
				extend(res, autoCssTransition(def$$1.name || "v"))
			}
			extend(res, def$$1)
			return res
		} else if (typeof def$$1 === "string") {
			return autoCssTransition(def$$1)
		}
	}

	var autoCssTransition = cached(function (name) {
		return {
			enterClass: name + "-enter",
			enterToClass: name + "-enter-to",
			enterActiveClass: name + "-enter-active",
			leaveClass: name + "-leave",
			leaveToClass: name + "-leave-to",
			leaveActiveClass: name + "-leave-active",
		}
	})

	var hasTransition = inBrowser && !isIE9
	var TRANSITION = "transition"
	var ANIMATION = "animation"

	// Transition property/event sniffing
	var transitionProp = "transition"
	var transitionEndEvent = "transitionend"
	var animationProp = "animation"
	var animationEndEvent = "animationend"
	if (hasTransition) {
		/* istanbul ignore if */
		if (
			window.ontransitionend === undefined &&
			window.onwebkittransitionend !== undefined
		) {
			transitionProp = "WebkitTransition"
			transitionEndEvent = "webkitTransitionEnd"
		}
		if (
			window.onanimationend === undefined &&
			window.onwebkitanimationend !== undefined
		) {
			animationProp = "WebkitAnimation"
			animationEndEvent = "webkitAnimationEnd"
		}
	}

	// binding to window is necessary to make hot reload work in IE in strict mode
	var raf = inBrowser
		? window.requestAnimationFrame
			? window.requestAnimationFrame.bind(window)
			: setTimeout
		: /* istanbul ignore next */ function (fn) {
				return fn()
		  }

	function nextFrame(fn) {
		raf(function () {
			raf(fn)
		})
	}

	function addTransitionClass(el, cls) {
		var transitionClasses =
			el._transitionClasses || (el._transitionClasses = [])
		if (transitionClasses.indexOf(cls) < 0) {
			transitionClasses.push(cls)
			addClass(el, cls)
		}
	}

	function removeTransitionClass(el, cls) {
		if (el._transitionClasses) {
			remove(el._transitionClasses, cls)
		}
		removeClass(el, cls)
	}

	function whenTransitionEnds(el, expectedType, cb) {
		var ref = getTransitionInfo(el, expectedType)
		var type = ref.type
		var timeout = ref.timeout
		var propCount = ref.propCount
		if (!type) {
			return cb()
		}
		var event = type === TRANSITION ? transitionEndEvent : animationEndEvent
		var ended = 0
		var end = function () {
			el.removeEventListener(event, onEnd)
			cb()
		}
		var onEnd = function (e) {
			if (e.target === el) {
				if (++ended >= propCount) {
					end()
				}
			}
		}
		setTimeout(function () {
			if (ended < propCount) {
				end()
			}
		}, timeout + 1)
		el.addEventListener(event, onEnd)
	}

	var transformRE = /\b(transform|all)(,|$)/

	function getTransitionInfo(el, expectedType) {
		var styles = window.getComputedStyle(el)
		// JSDOM may return undefined for transition properties
		var transitionDelays = (styles[transitionProp + "Delay"] || "").split(", ")
		var transitionDurations = (styles[transitionProp + "Duration"] || "").split(
			", "
		)
		var transitionTimeout = getTimeout(transitionDelays, transitionDurations)
		var animationDelays = (styles[animationProp + "Delay"] || "").split(", ")
		var animationDurations = (styles[animationProp + "Duration"] || "").split(
			", "
		)
		var animationTimeout = getTimeout(animationDelays, animationDurations)

		var type
		var timeout = 0
		var propCount = 0
		/* istanbul ignore if */
		if (expectedType === TRANSITION) {
			if (transitionTimeout > 0) {
				type = TRANSITION
				timeout = transitionTimeout
				propCount = transitionDurations.length
			}
		} else if (expectedType === ANIMATION) {
			if (animationTimeout > 0) {
				type = ANIMATION
				timeout = animationTimeout
				propCount = animationDurations.length
			}
		} else {
			timeout = Math.max(transitionTimeout, animationTimeout)
			type =
				timeout > 0
					? transitionTimeout > animationTimeout
						? TRANSITION
						: ANIMATION
					: null
			propCount = type
				? type === TRANSITION
					? transitionDurations.length
					: animationDurations.length
				: 0
		}
		var hasTransform =
			type === TRANSITION &&
			transformRE.test(styles[transitionProp + "Property"])
		return {
			type: type,
			timeout: timeout,
			propCount: propCount,
			hasTransform: hasTransform,
		}
	}

	function getTimeout(delays, durations) {
		/* istanbul ignore next */
		while (delays.length < durations.length) {
			delays = delays.concat(delays)
		}

		return Math.max.apply(
			null,
			durations.map(function (d, i) {
				return toMs(d) + toMs(delays[i])
			})
		)
	}

	// Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
	// in a locale-dependent way, using a comma instead of a dot.
	// If comma is not replaced with a dot, the input will be rounded down (i.e. acting
	// as a floor function) causing unexpected behaviors
	function toMs(s) {
		return Number(s.slice(0, -1).replace(",", ".")) * 1000
	}

	/*  */

	function enter(vnode, toggleDisplay) {
		var el = vnode.elm

		// call leave callback now
		if (isDef(el._leaveCb)) {
			el._leaveCb.cancelled = true
			el._leaveCb()
		}

		var data = resolveTransition(vnode.data.transition)
		if (isUndef(data)) {
			return
		}

		/* istanbul ignore if */
		if (isDef(el._enterCb) || el.nodeType !== 1) {
			return
		}

		var css = data.css
		var type = data.type
		var enterClass = data.enterClass
		var enterToClass = data.enterToClass
		var enterActiveClass = data.enterActiveClass
		var appearClass = data.appearClass
		var appearToClass = data.appearToClass
		var appearActiveClass = data.appearActiveClass
		var beforeEnter = data.beforeEnter
		var enter = data.enter
		var afterEnter = data.afterEnter
		var enterCancelled = data.enterCancelled
		var beforeAppear = data.beforeAppear
		var appear = data.appear
		var afterAppear = data.afterAppear
		var appearCancelled = data.appearCancelled
		var duration = data.duration

		// activeInstance will always be the <transition> component managing this
		// transition. One edge case to check is when the <transition> is placed
		// as the root node of a child component. In that case we need to check
		// <transition>'s parent for appear check.
		var context = activeInstance
		var transitionNode = activeInstance.$vnode
		while (transitionNode && transitionNode.parent) {
			context = transitionNode.context
			transitionNode = transitionNode.parent
		}

		var isAppear = !context._isMounted || !vnode.isRootInsert

		if (isAppear && !appear && appear !== "") {
			return
		}

		var startClass = isAppear && appearClass ? appearClass : enterClass
		var activeClass =
			isAppear && appearActiveClass ? appearActiveClass : enterActiveClass
		var toClass = isAppear && appearToClass ? appearToClass : enterToClass

		var beforeEnterHook = isAppear ? beforeAppear || beforeEnter : beforeEnter
		var enterHook = isAppear
			? typeof appear === "function"
				? appear
				: enter
			: enter
		var afterEnterHook = isAppear ? afterAppear || afterEnter : afterEnter
		var enterCancelledHook = isAppear
			? appearCancelled || enterCancelled
			: enterCancelled

		var explicitEnterDuration = toNumber(
			isObject(duration) ? duration.enter : duration
		)

		if (explicitEnterDuration != null) {
			checkDuration(explicitEnterDuration, "enter", vnode)
		}

		var expectsCSS = css !== false && !isIE9
		var userWantsControl = getHookArgumentsLength(enterHook)

		var cb = (el._enterCb = once(function () {
			if (expectsCSS) {
				removeTransitionClass(el, toClass)
				removeTransitionClass(el, activeClass)
			}
			if (cb.cancelled) {
				if (expectsCSS) {
					removeTransitionClass(el, startClass)
				}
				enterCancelledHook && enterCancelledHook(el)
			} else {
				afterEnterHook && afterEnterHook(el)
			}
			el._enterCb = null
		}))

		if (!vnode.data.show) {
			// remove pending leave element on enter by injecting an insert hook
			mergeVNodeHook(vnode, "insert", function () {
				var parent = el.parentNode
				var pendingNode =
					parent && parent._pending && parent._pending[vnode.key]
				if (
					pendingNode &&
					pendingNode.tag === vnode.tag &&
					pendingNode.elm._leaveCb
				) {
					pendingNode.elm._leaveCb()
				}
				enterHook && enterHook(el, cb)
			})
		}

		// start enter transition
		beforeEnterHook && beforeEnterHook(el)
		if (expectsCSS) {
			addTransitionClass(el, startClass)
			addTransitionClass(el, activeClass)
			nextFrame(function () {
				removeTransitionClass(el, startClass)
				if (!cb.cancelled) {
					addTransitionClass(el, toClass)
					if (!userWantsControl) {
						if (isValidDuration(explicitEnterDuration)) {
							setTimeout(cb, explicitEnterDuration)
						} else {
							whenTransitionEnds(el, type, cb)
						}
					}
				}
			})
		}

		if (vnode.data.show) {
			toggleDisplay && toggleDisplay()
			enterHook && enterHook(el, cb)
		}

		if (!expectsCSS && !userWantsControl) {
			cb()
		}
	}

	function leave(vnode, rm) {
		var el = vnode.elm

		// call enter callback now
		if (isDef(el._enterCb)) {
			el._enterCb.cancelled = true
			el._enterCb()
		}

		var data = resolveTransition(vnode.data.transition)
		if (isUndef(data) || el.nodeType !== 1) {
			return rm()
		}

		/* istanbul ignore if */
		if (isDef(el._leaveCb)) {
			return
		}

		var css = data.css
		var type = data.type
		var leaveClass = data.leaveClass
		var leaveToClass = data.leaveToClass
		var leaveActiveClass = data.leaveActiveClass
		var beforeLeave = data.beforeLeave
		var leave = data.leave
		var afterLeave = data.afterLeave
		var leaveCancelled = data.leaveCancelled
		var delayLeave = data.delayLeave
		var duration = data.duration

		var expectsCSS = css !== false && !isIE9
		var userWantsControl = getHookArgumentsLength(leave)

		var explicitLeaveDuration = toNumber(
			isObject(duration) ? duration.leave : duration
		)

		if (isDef(explicitLeaveDuration)) {
			checkDuration(explicitLeaveDuration, "leave", vnode)
		}

		var cb = (el._leaveCb = once(function () {
			if (el.parentNode && el.parentNode._pending) {
				el.parentNode._pending[vnode.key] = null
			}
			if (expectsCSS) {
				removeTransitionClass(el, leaveToClass)
				removeTransitionClass(el, leaveActiveClass)
			}
			if (cb.cancelled) {
				if (expectsCSS) {
					removeTransitionClass(el, leaveClass)
				}
				leaveCancelled && leaveCancelled(el)
			} else {
				rm()
				afterLeave && afterLeave(el)
			}
			el._leaveCb = null
		}))

		if (delayLeave) {
			delayLeave(performLeave)
		} else {
			performLeave()
		}

		function performLeave() {
			// the delayed leave may have already been cancelled
			if (cb.cancelled) {
				return
			}
			// record leaving element
			if (!vnode.data.show && el.parentNode) {
				;(el.parentNode._pending || (el.parentNode._pending = {}))[
					vnode.key
				] = vnode
			}
			beforeLeave && beforeLeave(el)
			if (expectsCSS) {
				addTransitionClass(el, leaveClass)
				addTransitionClass(el, leaveActiveClass)
				nextFrame(function () {
					removeTransitionClass(el, leaveClass)
					if (!cb.cancelled) {
						addTransitionClass(el, leaveToClass)
						if (!userWantsControl) {
							if (isValidDuration(explicitLeaveDuration)) {
								setTimeout(cb, explicitLeaveDuration)
							} else {
								whenTransitionEnds(el, type, cb)
							}
						}
					}
				})
			}
			leave && leave(el, cb)
			if (!expectsCSS && !userWantsControl) {
				cb()
			}
		}
	}

	// only used in dev mode
	function checkDuration(val, name, vnode) {
		if (typeof val !== "number") {
			warn(
				"<transition> explicit " +
					name +
					" duration is not a valid number - " +
					"got " +
					JSON.stringify(val) +
					".",
				vnode.context
			)
		} else if (isNaN(val)) {
			warn(
				"<transition> explicit " +
					name +
					" duration is NaN - " +
					"the duration expression might be incorrect.",
				vnode.context
			)
		}
	}

	function isValidDuration(val) {
		return typeof val === "number" && !isNaN(val)
	}

	/**
	 * Normalize a transition hook's argument length. The hook may be:
	 * - a merged hook (invoker) with the original in .fns
	 * - a wrapped component method (check ._length)
	 * - a plain function (.length)
	 */
	function getHookArgumentsLength(fn) {
		if (isUndef(fn)) {
			return false
		}
		var invokerFns = fn.fns
		if (isDef(invokerFns)) {
			// invoker
			return getHookArgumentsLength(
				Array.isArray(invokerFns) ? invokerFns[0] : invokerFns
			)
		} else {
			return (fn._length || fn.length) > 1
		}
	}

	function _enter(_, vnode) {
		if (vnode.data.show !== true) {
			enter(vnode)
		}
	}

	var transition = inBrowser
		? {
				create: _enter,
				activate: _enter,
				remove: function remove$$1(vnode, rm) {
					/* istanbul ignore else */
					if (vnode.data.show !== true) {
						leave(vnode, rm)
					} else {
						rm()
					}
				},
		  }
		: {}

	var platformModules = [attrs, klass, events, domProps, style, transition]

	/*  */

	// the directive module should be applied last, after all
	// built-in modules have been applied.
	var modules = platformModules.concat(baseModules)

	var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules })

	/**
	 * Not type checking this file because flow doesn't like attaching
	 * properties to Elements.
	 */

	/* istanbul ignore if */
	if (isIE9) {
		// http://www.matts411.com/post/internet-explorer-9-oninput/
		document.addEventListener("selectionchange", function () {
			var el = document.activeElement
			if (el && el.vmodel) {
				trigger(el, "input")
			}
		})
	}

	var directive = {
		inserted: function inserted(el, binding, vnode, oldVnode) {
			if (vnode.tag === "select") {
				// #6903
				if (oldVnode.elm && !oldVnode.elm._vOptions) {
					mergeVNodeHook(vnode, "postpatch", function () {
						directive.componentUpdated(el, binding, vnode)
					})
				} else {
					setSelected(el, binding, vnode.context)
				}
				el._vOptions = [].map.call(el.options, getValue)
			} else if (vnode.tag === "textarea" || isTextInputType(el.type)) {
				el._vModifiers = binding.modifiers
				if (!binding.modifiers.lazy) {
					el.addEventListener("compositionstart", onCompositionStart)
					el.addEventListener("compositionend", onCompositionEnd)
					// Safari < 10.2 & UIWebView doesn't fire compositionend when
					// switching focus before confirming composition choice
					// this also fixes the issue where some browsers e.g. iOS Chrome
					// fires "change" instead of "input" on autocomplete.
					el.addEventListener("change", onCompositionEnd)
					/* istanbul ignore if */
					if (isIE9) {
						el.vmodel = true
					}
				}
			}
		},

		componentUpdated: function componentUpdated(el, binding, vnode) {
			if (vnode.tag === "select") {
				setSelected(el, binding, vnode.context)
				// in case the options rendered by v-for have changed,
				// it's possible that the value is out-of-sync with the rendered options.
				// detect such cases and filter out values that no longer has a matching
				// option in the DOM.
				var prevOptions = el._vOptions
				var curOptions = (el._vOptions = [].map.call(el.options, getValue))
				if (
					curOptions.some(function (o, i) {
						return !looseEqual(o, prevOptions[i])
					})
				) {
					// trigger change event if
					// no matching option found for at least one value
					var needReset = el.multiple
						? binding.value.some(function (v) {
								return hasNoMatchingOption(v, curOptions)
						  })
						: binding.value !== binding.oldValue &&
						  hasNoMatchingOption(binding.value, curOptions)
					if (needReset) {
						trigger(el, "change")
					}
				}
			}
		},
	}

	function setSelected(el, binding, vm) {
		actuallySetSelected(el, binding, vm)
		/* istanbul ignore if */
		if (isIE || isEdge) {
			setTimeout(function () {
				actuallySetSelected(el, binding, vm)
			}, 0)
		}
	}

	function actuallySetSelected(el, binding, vm) {
		var value = binding.value
		var isMultiple = el.multiple
		if (isMultiple && !Array.isArray(value)) {
			warn(
				'<select multiple v-model="' +
					binding.expression +
					'"> ' +
					"expects an Array value for its binding, but got " +
					Object.prototype.toString.call(value).slice(8, -1),
				vm
			)
			return
		}
		var selected, option
		for (var i = 0, l = el.options.length; i < l; i++) {
			option = el.options[i]
			if (isMultiple) {
				selected = looseIndexOf(value, getValue(option)) > -1
				if (option.selected !== selected) {
					option.selected = selected
				}
			} else {
				if (looseEqual(getValue(option), value)) {
					if (el.selectedIndex !== i) {
						el.selectedIndex = i
					}
					return
				}
			}
		}
		if (!isMultiple) {
			el.selectedIndex = -1
		}
	}

	function hasNoMatchingOption(value, options) {
		return options.every(function (o) {
			return !looseEqual(o, value)
		})
	}

	function getValue(option) {
		return "_value" in option ? option._value : option.value
	}

	function onCompositionStart(e) {
		e.target.composing = true
	}

	function onCompositionEnd(e) {
		// prevent triggering an input event for no reason
		if (!e.target.composing) {
			return
		}
		e.target.composing = false
		trigger(e.target, "input")
	}

	function trigger(el, type) {
		var e = document.createEvent("HTMLEvents")
		e.initEvent(type, true, true)
		el.dispatchEvent(e)
	}

	/*  */

	// recursively search for possible transition defined inside the component root
	function locateNode(vnode) {
		return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
			? locateNode(vnode.componentInstance._vnode)
			: vnode
	}

	var show = {
		bind: function bind(el, ref, vnode) {
			var value = ref.value

			vnode = locateNode(vnode)
			var transition$$1 = vnode.data && vnode.data.transition
			var originalDisplay = (el.__vOriginalDisplay =
				el.style.display === "none" ? "" : el.style.display)
			if (value && transition$$1) {
				vnode.data.show = true
				enter(vnode, function () {
					el.style.display = originalDisplay
				})
			} else {
				el.style.display = value ? originalDisplay : "none"
			}
		},

		update: function update(el, ref, vnode) {
			var value = ref.value
			var oldValue = ref.oldValue

			/* istanbul ignore if */
			if (!value === !oldValue) {
				return
			}
			vnode = locateNode(vnode)
			var transition$$1 = vnode.data && vnode.data.transition
			if (transition$$1) {
				vnode.data.show = true
				if (value) {
					enter(vnode, function () {
						el.style.display = el.__vOriginalDisplay
					})
				} else {
					leave(vnode, function () {
						el.style.display = "none"
					})
				}
			} else {
				el.style.display = value ? el.__vOriginalDisplay : "none"
			}
		},

		unbind: function unbind(el, binding, vnode, oldVnode, isDestroy) {
			if (!isDestroy) {
				el.style.display = el.__vOriginalDisplay
			}
		},
	}

	var platformDirectives = {
		model: directive,
		show: show,
	}

	/*  */

	var transitionProps = {
		name: String,
		appear: Boolean,
		css: Boolean,
		mode: String,
		type: String,
		enterClass: String,
		leaveClass: String,
		enterToClass: String,
		leaveToClass: String,
		enterActiveClass: String,
		leaveActiveClass: String,
		appearClass: String,
		appearActiveClass: String,
		appearToClass: String,
		duration: [Number, String, Object],
	}

	// in case the child is also an abstract component, e.g. <keep-alive>
	// we want to recursively retrieve the real component to be rendered
	function getRealChild(vnode) {
		var compOptions = vnode && vnode.componentOptions
		if (compOptions && compOptions.Ctor.options.abstract) {
			return getRealChild(getFirstComponentChild(compOptions.children))
		} else {
			return vnode
		}
	}

	function extractTransitionData(comp) {
		var data = {}
		var options = comp.$options
		// props
		for (var key in options.propsData) {
			data[key] = comp[key]
		}
		// events.
		// extract listeners and pass them directly to the transition methods
		var listeners = options._parentListeners
		for (var key$1 in listeners) {
			data[camelize(key$1)] = listeners[key$1]
		}
		return data
	}

	function placeholder(h, rawChild) {
		if (/\d-keep-alive$/.test(rawChild.tag)) {
			return h("keep-alive", {
				props: rawChild.componentOptions.propsData,
			})
		}
	}

	function hasParentTransition(vnode) {
		while ((vnode = vnode.parent)) {
			if (vnode.data.transition) {
				return true
			}
		}
	}

	function isSameChild(child, oldChild) {
		return oldChild.key === child.key && oldChild.tag === child.tag
	}

	var isNotTextNode = function (c) {
		return c.tag || isAsyncPlaceholder(c)
	}

	var isVShowDirective = function (d) {
		return d.name === "show"
	}

	var Transition = {
		name: "transition",
		props: transitionProps,
		abstract: true,

		render: function render(h) {
			var this$1 = this

			var children = this.$slots.default
			if (!children) {
				return
			}

			// filter out text nodes (possible whitespaces)
			children = children.filter(isNotTextNode)
			/* istanbul ignore if */
			if (!children.length) {
				return
			}

			// warn multiple elements
			if (children.length > 1) {
				warn(
					"<transition> can only be used on a single element. Use " +
						"<transition-group> for lists.",
					this.$parent
				)
			}

			var mode = this.mode

			// warn invalid mode
			if (mode && mode !== "in-out" && mode !== "out-in") {
				warn("invalid <transition> mode: " + mode, this.$parent)
			}

			var rawChild = children[0]

			// if this is a component root node and the component's
			// parent container node also has transition, skip.
			if (hasParentTransition(this.$vnode)) {
				return rawChild
			}

			// apply transition data to child
			// use getRealChild() to ignore abstract components e.g. keep-alive
			var child = getRealChild(rawChild)
			/* istanbul ignore if */
			if (!child) {
				return rawChild
			}

			if (this._leaving) {
				return placeholder(h, rawChild)
			}

			// ensure a key that is unique to the vnode type and to this transition
			// component instance. This key will be used to remove pending leaving nodes
			// during entering.
			var id = "__transition-" + this._uid + "-"
			child.key =
				child.key == null
					? child.isComment
						? id + "comment"
						: id + child.tag
					: isPrimitive(child.key)
					? String(child.key).indexOf(id) === 0
						? child.key
						: id + child.key
					: child.key

			var data = ((
				child.data || (child.data = {})
			).transition = extractTransitionData(this))
			var oldRawChild = this._vnode
			var oldChild = getRealChild(oldRawChild)

			// mark v-show
			// so that the transition module can hand over the control to the directive
			if (
				child.data.directives &&
				child.data.directives.some(isVShowDirective)
			) {
				child.data.show = true
			}

			if (
				oldChild &&
				oldChild.data &&
				!isSameChild(child, oldChild) &&
				!isAsyncPlaceholder(oldChild) &&
				// #6687 component root is a comment node
				!(
					oldChild.componentInstance &&
					oldChild.componentInstance._vnode.isComment
				)
			) {
				// replace old child transition data with fresh one
				// important for dynamic transitions!
				var oldData = (oldChild.data.transition = extend({}, data))
				// handle transition mode
				if (mode === "out-in") {
					// return placeholder node and queue update when leave finishes
					this._leaving = true
					mergeVNodeHook(oldData, "afterLeave", function () {
						this$1._leaving = false
						this$1.$forceUpdate()
					})
					return placeholder(h, rawChild)
				} else if (mode === "in-out") {
					if (isAsyncPlaceholder(child)) {
						return oldRawChild
					}
					var delayedLeave
					var performLeave = function () {
						delayedLeave()
					}
					mergeVNodeHook(data, "afterEnter", performLeave)
					mergeVNodeHook(data, "enterCancelled", performLeave)
					mergeVNodeHook(oldData, "delayLeave", function (leave) {
						delayedLeave = leave
					})
				}
			}

			return rawChild
		},
	}

	/*  */

	var props = extend(
		{
			tag: String,
			moveClass: String,
		},
		transitionProps
	)

	delete props.mode

	var TransitionGroup = {
		props: props,

		beforeMount: function beforeMount() {
			var this$1 = this

			var update = this._update
			this._update = function (vnode, hydrating) {
				var restoreActiveInstance = setActiveInstance(this$1)
				// force removing pass
				this$1.__patch__(
					this$1._vnode,
					this$1.kept,
					false, // hydrating
					true // removeOnly (!important, avoids unnecessary moves)
				)
				this$1._vnode = this$1.kept
				restoreActiveInstance()
				update.call(this$1, vnode, hydrating)
			}
		},

		render: function render(h) {
			var tag = this.tag || this.$vnode.data.tag || "span"
			var map = Object.create(null)
			var prevChildren = (this.prevChildren = this.children)
			var rawChildren = this.$slots.default || []
			var children = (this.children = [])
			var transitionData = extractTransitionData(this)

			for (var i = 0; i < rawChildren.length; i++) {
				var c = rawChildren[i]
				if (c.tag) {
					if (c.key != null && String(c.key).indexOf("__vlist") !== 0) {
						children.push(c)
						map[c.key] = c
						;(c.data || (c.data = {})).transition = transitionData
					} else {
						var opts = c.componentOptions
						var name = opts ? opts.Ctor.options.name || opts.tag || "" : c.tag
						warn("<transition-group> children must be keyed: <" + name + ">")
					}
				}
			}

			if (prevChildren) {
				var kept = []
				var removed = []
				for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
					var c$1 = prevChildren[i$1]
					c$1.data.transition = transitionData
					c$1.data.pos = c$1.elm.getBoundingClientRect()
					if (map[c$1.key]) {
						kept.push(c$1)
					} else {
						removed.push(c$1)
					}
				}
				this.kept = h(tag, null, kept)
				this.removed = removed
			}

			return h(tag, null, children)
		},

		updated: function updated() {
			var children = this.prevChildren
			var moveClass = this.moveClass || (this.name || "v") + "-move"
			if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
				return
			}

			// we divide the work into three loops to avoid mixing DOM reads and writes
			// in each iteration - which helps prevent layout thrashing.
			children.forEach(callPendingCbs)
			children.forEach(recordPosition)
			children.forEach(applyTranslation)

			// force reflow to put everything in position
			// assign to this to avoid being removed in tree-shaking
			// $flow-disable-line
			this._reflow = document.body.offsetHeight

			children.forEach(function (c) {
				if (c.data.moved) {
					var el = c.elm
					var s = el.style
					addTransitionClass(el, moveClass)
					s.transform = s.WebkitTransform = s.transitionDuration = ""
					el.addEventListener(
						transitionEndEvent,
						(el._moveCb = function cb(e) {
							if (e && e.target !== el) {
								return
							}
							if (!e || /transform$/.test(e.propertyName)) {
								el.removeEventListener(transitionEndEvent, cb)
								el._moveCb = null
								removeTransitionClass(el, moveClass)
							}
						})
					)
				}
			})
		},

		methods: {
			hasMove: function hasMove(el, moveClass) {
				/* istanbul ignore if */
				if (!hasTransition) {
					return false
				}
				/* istanbul ignore if */
				if (this._hasMove) {
					return this._hasMove
				}
				// Detect whether an element with the move class applied has
				// CSS transitions. Since the element may be inside an entering
				// transition at this very moment, we make a clone of it and remove
				// all other transition classes applied to ensure only the move class
				// is applied.
				var clone = el.cloneNode()
				if (el._transitionClasses) {
					el._transitionClasses.forEach(function (cls) {
						removeClass(clone, cls)
					})
				}
				addClass(clone, moveClass)
				clone.style.display = "none"
				this.$el.appendChild(clone)
				var info = getTransitionInfo(clone)
				this.$el.removeChild(clone)
				return (this._hasMove = info.hasTransform)
			},
		},
	}

	function callPendingCbs(c) {
		/* istanbul ignore if */
		if (c.elm._moveCb) {
			c.elm._moveCb()
		}
		/* istanbul ignore if */
		if (c.elm._enterCb) {
			c.elm._enterCb()
		}
	}

	function recordPosition(c) {
		c.data.newPos = c.elm.getBoundingClientRect()
	}

	function applyTranslation(c) {
		var oldPos = c.data.pos
		var newPos = c.data.newPos
		var dx = oldPos.left - newPos.left
		var dy = oldPos.top - newPos.top
		if (dx || dy) {
			c.data.moved = true
			var s = c.elm.style
			s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)"
			s.transitionDuration = "0s"
		}
	}

	var platformComponents = {
		Transition: Transition,
		TransitionGroup: TransitionGroup,
	}

	/*  */

	// install platform specific utils
	Vue.config.mustUseProp = mustUseProp
	Vue.config.isReservedTag = isReservedTag
	Vue.config.isReservedAttr = isReservedAttr
	Vue.config.getTagNamespace = getTagNamespace
	Vue.config.isUnknownElement = isUnknownElement

	// install platform runtime directives & components
	extend(Vue.options.directives, platformDirectives)
	extend(Vue.options.components, platformComponents)

	// install platform patch function
	Vue.prototype.__patch__ = inBrowser ? patch : noop

	// public mount method
	Vue.prototype.$mount = function (el, hydrating) {
		el = el && inBrowser ? query(el) : undefined
		return mountComponent(this, el, hydrating)
	}

	// devtools global hook
	/* istanbul ignore next */
	if (inBrowser) {
		setTimeout(function () {
			if (config.devtools) {
				if (devtools) {
					devtools.emit("init", Vue)
				} else {
					console[console.info ? "info" : "log"](
						"Download the Vue Devtools extension for a better development experience:\n" +
							"https://github.com/vuejs/vue-devtools"
					)
				}
			}
			if (config.productionTip !== false && typeof console !== "undefined") {
				console[console.info ? "info" : "log"](
					"You are running Vue in development mode.\n" +
						"Make sure to turn on production mode when deploying for production.\n" +
						"See more tips at https://vuejs.org/guide/deployment.html"
				)
			}
		}, 0)
	}

	/*  */

	var defaultTagRE = /\{\{((?:.|\r?\n)+?)\}\}/g
	var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g

	var buildRegex = cached(function (delimiters) {
		var open = delimiters[0].replace(regexEscapeRE, "\\$&")
		var close = delimiters[1].replace(regexEscapeRE, "\\$&")
		return new RegExp(open + "((?:.|\\n)+?)" + close, "g")
	})

	function parseText(text, delimiters) {
		var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE
		if (!tagRE.test(text)) {
			return
		}
		var tokens = []
		var rawTokens = []
		var lastIndex = (tagRE.lastIndex = 0)
		var match, index, tokenValue
		while ((match = tagRE.exec(text))) {
			index = match.index
			// push text token
			if (index > lastIndex) {
				rawTokens.push((tokenValue = text.slice(lastIndex, index)))
				tokens.push(JSON.stringify(tokenValue))
			}
			// tag token
			var exp = parseFilters(match[1].trim())
			tokens.push("_s(" + exp + ")")
			rawTokens.push({ "@binding": exp })
			lastIndex = index + match[0].length
		}
		if (lastIndex < text.length) {
			rawTokens.push((tokenValue = text.slice(lastIndex)))
			tokens.push(JSON.stringify(tokenValue))
		}
		return {
			expression: tokens.join("+"),
			tokens: rawTokens,
		}
	}

	/*  */

	function transformNode(el, options) {
		var warn = options.warn || baseWarn
		var staticClass = getAndRemoveAttr(el, "class")
		if (staticClass) {
			var res = parseText(staticClass, options.delimiters)
			if (res) {
				warn(
					'class="' +
						staticClass +
						'": ' +
						"Interpolation inside attributes has been removed. " +
						"Use v-bind or the colon shorthand instead. For example, " +
						'instead of <div class="{{ val }}">, use <div :class="val">.',
					el.rawAttrsMap["class"]
				)
			}
		}
		if (staticClass) {
			el.staticClass = JSON.stringify(staticClass)
		}
		var classBinding = getBindingAttr(el, "class", false /* getStatic */)
		if (classBinding) {
			el.classBinding = classBinding
		}
	}

	function genData(el) {
		var data = ""
		if (el.staticClass) {
			data += "staticClass:" + el.staticClass + ","
		}
		if (el.classBinding) {
			data += "class:" + el.classBinding + ","
		}
		return data
	}

	var klass$1 = {
		staticKeys: ["staticClass"],
		transformNode: transformNode,
		genData: genData,
	}

	/*  */

	function transformNode$1(el, options) {
		var warn = options.warn || baseWarn
		var staticStyle = getAndRemoveAttr(el, "style")
		if (staticStyle) {
			/* istanbul ignore if */
			{
				var res = parseText(staticStyle, options.delimiters)
				if (res) {
					warn(
						'style="' +
							staticStyle +
							'": ' +
							"Interpolation inside attributes has been removed. " +
							"Use v-bind or the colon shorthand instead. For example, " +
							'instead of <div style="{{ val }}">, use <div :style="val">.',
						el.rawAttrsMap["style"]
					)
				}
			}
			el.staticStyle = JSON.stringify(parseStyleText(staticStyle))
		}

		var styleBinding = getBindingAttr(el, "style", false /* getStatic */)
		if (styleBinding) {
			el.styleBinding = styleBinding
		}
	}

	function genData$1(el) {
		var data = ""
		if (el.staticStyle) {
			data += "staticStyle:" + el.staticStyle + ","
		}
		if (el.styleBinding) {
			data += "style:(" + el.styleBinding + "),"
		}
		return data
	}

	var style$1 = {
		staticKeys: ["staticStyle"],
		transformNode: transformNode$1,
		genData: genData$1,
	}

	/*  */

	var decoder

	var he = {
		decode: function decode(html) {
			decoder = decoder || document.createElement("div")
			decoder.innerHTML = html
			return decoder.textContent
		},
	}

	/*  */

	var isUnaryTag = makeMap(
		"area,base,br,col,embed,frame,hr,img,input,isindex,keygen," +
			"link,meta,param,source,track,wbr"
	)

	// Elements that you can, intentionally, leave open
	// (and which close themselves)
	var canBeLeftOpenTag = makeMap(
		"colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source"
	)

	// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
	// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
	var isNonPhrasingTag = makeMap(
		"address,article,aside,base,blockquote,body,caption,col,colgroup,dd," +
			"details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form," +
			"h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta," +
			"optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead," +
			"title,tr,track"
	)

	/**
	 * Not type-checking this file because it's mostly vendor code.
	 */

	// Regular Expressions for parsing tags and attributes
	var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/
	var dynamicArgAttribute = /^\s*((?:v-[\w-]+:|@|:|#)\[[^=]+\][^\s"'<>\/=]*)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/
	var ncname = "[a-zA-Z_][\\-\\.0-9_a-zA-Z" + unicodeRegExp.source + "]*"
	var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")"
	var startTagOpen = new RegExp("^<" + qnameCapture)
	var startTagClose = /^\s*(\/?)>/
	var endTag = new RegExp("^<\\/" + qnameCapture + "[^>]*>")
	var doctype = /^<!DOCTYPE [^>]+>/i
	// #7298: escape - to avoid being passed as HTML comment when inlined in page
	var comment = /^<!\--/
	var conditionalComment = /^<!\[/

	// Special Elements (can contain anything)
	var isPlainTextElement = makeMap("script,style,textarea", true)
	var reCache = {}

	var decodingMap = {
		"&lt;": "<",
		"&gt;": ">",
		"&quot;": '"',
		"&amp;": "&",
		"&#10;": "\n",
		"&#9;": "\t",
		"&#39;": "'",
	}
	var encodedAttr = /&(?:lt|gt|quot|amp|#39);/g
	var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g

	// #5992
	var isIgnoreNewlineTag = makeMap("pre,textarea", true)
	var shouldIgnoreFirstNewline = function (tag, html) {
		return tag && isIgnoreNewlineTag(tag) && html[0] === "\n"
	}

	function decodeAttr(value, shouldDecodeNewlines) {
		var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr
		return value.replace(re, function (match) {
			return decodingMap[match]
		})
	}

	function parseHTML(html, options) {
		var stack = []
		var expectHTML = options.expectHTML
		var isUnaryTag$$1 = options.isUnaryTag || no
		var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no
		var index = 0
		var last, lastTag
		while (html) {
			last = html
			// Make sure we're not in a plaintext content element like script/style
			if (!lastTag || !isPlainTextElement(lastTag)) {
				var textEnd = html.indexOf("<")
				if (textEnd === 0) {
					// Comment:
					if (comment.test(html)) {
						var commentEnd = html.indexOf("-->")

						if (commentEnd >= 0) {
							if (options.shouldKeepComment) {
								options.comment(
									html.substring(4, commentEnd),
									index,
									index + commentEnd + 3
								)
							}
							advance(commentEnd + 3)
							continue
						}
					}

					// http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
					if (conditionalComment.test(html)) {
						var conditionalEnd = html.indexOf("]>")

						if (conditionalEnd >= 0) {
							advance(conditionalEnd + 2)
							continue
						}
					}

					// Doctype:
					var doctypeMatch = html.match(doctype)
					if (doctypeMatch) {
						advance(doctypeMatch[0].length)
						continue
					}

					// End tag:
					var endTagMatch = html.match(endTag)
					if (endTagMatch) {
						var curIndex = index
						advance(endTagMatch[0].length)
						parseEndTag(endTagMatch[1], curIndex, index)
						continue
					}

					// Start tag:
					var startTagMatch = parseStartTag()
					if (startTagMatch) {
						handleStartTag(startTagMatch)
						if (shouldIgnoreFirstNewline(startTagMatch.tagName, html)) {
							advance(1)
						}
						continue
					}
				}

				var text = void 0,
					rest = void 0,
					next = void 0
				if (textEnd >= 0) {
					rest = html.slice(textEnd)
					while (
						!endTag.test(rest) &&
						!startTagOpen.test(rest) &&
						!comment.test(rest) &&
						!conditionalComment.test(rest)
					) {
						// < in plain text, be forgiving and treat it as text
						next = rest.indexOf("<", 1)
						if (next < 0) {
							break
						}
						textEnd += next
						rest = html.slice(textEnd)
					}
					text = html.substring(0, textEnd)
				}

				if (textEnd < 0) {
					text = html
				}

				if (text) {
					advance(text.length)
				}

				if (options.chars && text) {
					options.chars(text, index - text.length, index)
				}
			} else {
				var endTagLength = 0
				var stackedTag = lastTag.toLowerCase()
				var reStackedTag =
					reCache[stackedTag] ||
					(reCache[stackedTag] = new RegExp(
						"([\\s\\S]*?)(</" + stackedTag + "[^>]*>)",
						"i"
					))
				var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
					endTagLength = endTag.length
					if (!isPlainTextElement(stackedTag) && stackedTag !== "noscript") {
						text = text
							.replace(/<!\--([\s\S]*?)-->/g, "$1") // #7298
							.replace(/<!\[CDATA\[([\s\S]*?)]]>/g, "$1")
					}
					if (shouldIgnoreFirstNewline(stackedTag, text)) {
						text = text.slice(1)
					}
					if (options.chars) {
						options.chars(text)
					}
					return ""
				})
				index += html.length - rest$1.length
				html = rest$1
				parseEndTag(stackedTag, index - endTagLength, index)
			}

			if (html === last) {
				options.chars && options.chars(html)
				if (!stack.length && options.warn) {
					options.warn('Mal-formatted tag at end of template: "' + html + '"', {
						start: index + html.length,
					})
				}
				break
			}
		}

		// Clean up any remaining tags
		parseEndTag()

		function advance(n) {
			index += n
			html = html.substring(n)
		}

		function parseStartTag() {
			var start = html.match(startTagOpen)
			if (start) {
				var match = {
					tagName: start[1],
					attrs: [],
					start: index,
				}
				advance(start[0].length)
				var end, attr
				while (
					!(end = html.match(startTagClose)) &&
					(attr = html.match(dynamicArgAttribute) || html.match(attribute))
				) {
					attr.start = index
					advance(attr[0].length)
					attr.end = index
					match.attrs.push(attr)
				}
				if (end) {
					match.unarySlash = end[1]
					advance(end[0].length)
					match.end = index
					return match
				}
			}
		}

		function handleStartTag(match) {
			var tagName = match.tagName
			var unarySlash = match.unarySlash

			if (expectHTML) {
				if (lastTag === "p" && isNonPhrasingTag(tagName)) {
					parseEndTag(lastTag)
				}
				if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
					parseEndTag(tagName)
				}
			}

			var unary = isUnaryTag$$1(tagName) || !!unarySlash

			var l = match.attrs.length
			var attrs = new Array(l)
			for (var i = 0; i < l; i++) {
				var args = match.attrs[i]
				var value = args[3] || args[4] || args[5] || ""
				var shouldDecodeNewlines =
					tagName === "a" && args[1] === "href"
						? options.shouldDecodeNewlinesForHref
						: options.shouldDecodeNewlines
				attrs[i] = {
					name: args[1],
					value: decodeAttr(value, shouldDecodeNewlines),
				}
				if (options.outputSourceRange) {
					attrs[i].start = args.start + args[0].match(/^\s*/).length
					attrs[i].end = args.end
				}
			}

			if (!unary) {
				stack.push({
					tag: tagName,
					lowerCasedTag: tagName.toLowerCase(),
					attrs: attrs,
					start: match.start,
					end: match.end,
				})
				lastTag = tagName
			}

			if (options.start) {
				options.start(tagName, attrs, unary, match.start, match.end)
			}
		}

		function parseEndTag(tagName, start, end) {
			var pos, lowerCasedTagName
			if (start == null) {
				start = index
			}
			if (end == null) {
				end = index
			}

			// Find the closest opened tag of the same type
			if (tagName) {
				lowerCasedTagName = tagName.toLowerCase()
				for (pos = stack.length - 1; pos >= 0; pos--) {
					if (stack[pos].lowerCasedTag === lowerCasedTagName) {
						break
					}
				}
			} else {
				// If no tag name is provided, clean shop
				pos = 0
			}

			if (pos >= 0) {
				// Close all the open elements, up the stack
				for (var i = stack.length - 1; i >= pos; i--) {
					if (i > pos || (!tagName && options.warn)) {
						options.warn(
							"tag <" + stack[i].tag + "> has no matching end tag.",
							{ start: stack[i].start, end: stack[i].end }
						)
					}
					if (options.end) {
						options.end(stack[i].tag, start, end)
					}
				}

				// Remove the open elements from the stack
				stack.length = pos
				lastTag = pos && stack[pos - 1].tag
			} else if (lowerCasedTagName === "br") {
				if (options.start) {
					options.start(tagName, [], true, start, end)
				}
			} else if (lowerCasedTagName === "p") {
				if (options.start) {
					options.start(tagName, [], false, start, end)
				}
				if (options.end) {
					options.end(tagName, start, end)
				}
			}
		}
	}

	/*  */

	var onRE = /^@|^v-on:/
	var dirRE = /^v-|^@|^:|^#/
	var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/
	var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/
	var stripParensRE = /^\(|\)$/g
	var dynamicArgRE = /^\[.*\]$/

	var argRE = /:(.*)$/
	var bindRE = /^:|^\.|^v-bind:/
	var modifierRE = /\.[^.\]]+(?=[^\]]*$)/g

	var slotRE = /^v-slot(:|$)|^#/

	var lineBreakRE = /[\r\n]/
	var whitespaceRE$1 = /\s+/g

	var invalidAttributeRE = /[\s"'<>\/=]/

	var decodeHTMLCached = cached(he.decode)

	var emptySlotScopeToken = "_empty_"

	// configurable state
	var warn$2
	var delimiters
	var transforms
	var preTransforms
	var postTransforms
	var platformIsPreTag
	var platformMustUseProp
	var platformGetTagNamespace
	var maybeComponent

	function createASTElement(tag, attrs, parent) {
		return {
			type: 1,
			tag: tag,
			attrsList: attrs,
			attrsMap: makeAttrsMap(attrs),
			rawAttrsMap: {},
			parent: parent,
			children: [],
		}
	}

	/**
	 * Convert HTML string to AST.
	 */
	function parse(template, options) {
		warn$2 = options.warn || baseWarn

		platformIsPreTag = options.isPreTag || no
		platformMustUseProp = options.mustUseProp || no
		platformGetTagNamespace = options.getTagNamespace || no
		var isReservedTag = options.isReservedTag || no
		maybeComponent = function (el) {
			return !!el.component || !isReservedTag(el.tag)
		}

		transforms = pluckModuleFunction(options.modules, "transformNode")
		preTransforms = pluckModuleFunction(options.modules, "preTransformNode")
		postTransforms = pluckModuleFunction(options.modules, "postTransformNode")

		delimiters = options.delimiters

		var stack = []
		var preserveWhitespace = options.preserveWhitespace !== false
		var whitespaceOption = options.whitespace
		var root
		var currentParent
		var inVPre = false
		var inPre = false
		var warned = false

		function warnOnce(msg, range) {
			if (!warned) {
				warned = true
				warn$2(msg, range)
			}
		}

		function closeElement(element) {
			trimEndingWhitespace(element)
			if (!inVPre && !element.processed) {
				element = processElement(element, options)
			}
			// tree management
			if (!stack.length && element !== root) {
				// allow root elements with v-if, v-else-if and v-else
				if (root.if && (element.elseif || element.else)) {
					{
						checkRootConstraints(element)
					}
					addIfCondition(root, {
						exp: element.elseif,
						block: element,
					})
				} else {
					warnOnce(
						"Component template should contain exactly one root element. " +
							"If you are using v-if on multiple elements, " +
							"use v-else-if to chain them instead.",
						{ start: element.start }
					)
				}
			}
			if (currentParent && !element.forbidden) {
				if (element.elseif || element.else) {
					processIfConditions(element, currentParent)
				} else {
					if (element.slotScope) {
						// scoped slot
						// keep it in the children list so that v-else(-if) conditions can
						// find it as the prev node.
						var name = element.slotTarget || '"default"'
						;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[
							name
						] = element
					}
					currentParent.children.push(element)
					element.parent = currentParent
				}
			}

			// final children cleanup
			// filter out scoped slots
			element.children = element.children.filter(function (c) {
				return !c.slotScope
			})
			// remove trailing whitespace node again
			trimEndingWhitespace(element)

			// check pre state
			if (element.pre) {
				inVPre = false
			}
			if (platformIsPreTag(element.tag)) {
				inPre = false
			}
			// apply post-transforms
			for (var i = 0; i < postTransforms.length; i++) {
				postTransforms[i](element, options)
			}
		}

		function trimEndingWhitespace(el) {
			// remove trailing whitespace node
			if (!inPre) {
				var lastNode
				while (
					(lastNode = el.children[el.children.length - 1]) &&
					lastNode.type === 3 &&
					lastNode.text === " "
				) {
					el.children.pop()
				}
			}
		}

		function checkRootConstraints(el) {
			if (el.tag === "slot" || el.tag === "template") {
				warnOnce(
					"Cannot use <" +
						el.tag +
						"> as component root element because it may " +
						"contain multiple nodes.",
					{ start: el.start }
				)
			}
			if (el.attrsMap.hasOwnProperty("v-for")) {
				warnOnce(
					"Cannot use v-for on stateful component root element because " +
						"it renders multiple elements.",
					el.rawAttrsMap["v-for"]
				)
			}
		}

		parseHTML(template, {
			warn: warn$2,
			expectHTML: options.expectHTML,
			isUnaryTag: options.isUnaryTag,
			canBeLeftOpenTag: options.canBeLeftOpenTag,
			shouldDecodeNewlines: options.shouldDecodeNewlines,
			shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
			shouldKeepComment: options.comments,
			outputSourceRange: options.outputSourceRange,
			start: function start(tag, attrs, unary, start$1, end) {
				// check namespace.
				// inherit parent ns if there is one
				var ns =
					(currentParent && currentParent.ns) || platformGetTagNamespace(tag)

				// handle IE svg bug
				/* istanbul ignore if */
				if (isIE && ns === "svg") {
					attrs = guardIESVGBug(attrs)
				}

				var element = createASTElement(tag, attrs, currentParent)
				if (ns) {
					element.ns = ns
				}

				{
					if (options.outputSourceRange) {
						element.start = start$1
						element.end = end
						element.rawAttrsMap = element.attrsList.reduce(function (
							cumulated,
							attr
						) {
							cumulated[attr.name] = attr
							return cumulated
						},
						{})
					}
					attrs.forEach(function (attr) {
						if (invalidAttributeRE.test(attr.name)) {
							warn$2(
								"Invalid dynamic argument expression: attribute names cannot contain " +
									"spaces, quotes, <, >, / or =.",
								{
									start: attr.start + attr.name.indexOf("["),
									end: attr.start + attr.name.length,
								}
							)
						}
					})
				}

				if (isForbiddenTag(element) && !isServerRendering()) {
					element.forbidden = true
					warn$2(
						"Templates should only be responsible for mapping the state to the " +
							"UI. Avoid placing tags with side-effects in your templates, such as " +
							"<" +
							tag +
							">" +
							", as they will not be parsed.",
						{ start: element.start }
					)
				}

				// apply pre-transforms
				for (var i = 0; i < preTransforms.length; i++) {
					element = preTransforms[i](element, options) || element
				}

				if (!inVPre) {
					processPre(element)
					if (element.pre) {
						inVPre = true
					}
				}
				if (platformIsPreTag(element.tag)) {
					inPre = true
				}
				if (inVPre) {
					processRawAttrs(element)
				} else if (!element.processed) {
					// structural directives
					processFor(element)
					processIf(element)
					processOnce(element)
				}

				if (!root) {
					root = element
					{
						checkRootConstraints(root)
					}
				}

				if (!unary) {
					currentParent = element
					stack.push(element)
				} else {
					closeElement(element)
				}
			},

			end: function end(tag, start, end$1) {
				var element = stack[stack.length - 1]
				// pop stack
				stack.length -= 1
				currentParent = stack[stack.length - 1]
				if (options.outputSourceRange) {
					element.end = end$1
				}
				closeElement(element)
			},

			chars: function chars(text, start, end) {
				if (!currentParent) {
					{
						if (text === template) {
							warnOnce(
								"Component template requires a root element, rather than just text.",
								{ start: start }
							)
						} else if ((text = text.trim())) {
							warnOnce(
								'text "' + text + '" outside root element will be ignored.',
								{ start: start }
							)
						}
					}
					return
				}
				// IE textarea placeholder bug
				/* istanbul ignore if */
				if (
					isIE &&
					currentParent.tag === "textarea" &&
					currentParent.attrsMap.placeholder === text
				) {
					return
				}
				var children = currentParent.children
				if (inPre || text.trim()) {
					text = isTextTag(currentParent) ? text : decodeHTMLCached(text)
				} else if (!children.length) {
					// remove the whitespace-only node right after an opening tag
					text = ""
				} else if (whitespaceOption) {
					if (whitespaceOption === "condense") {
						// in condense mode, remove the whitespace node if it contains
						// line break, otherwise condense to a single space
						text = lineBreakRE.test(text) ? "" : " "
					} else {
						text = " "
					}
				} else {
					text = preserveWhitespace ? " " : ""
				}
				if (text) {
					if (!inPre && whitespaceOption === "condense") {
						// condense consecutive whitespaces into single space
						text = text.replace(whitespaceRE$1, " ")
					}
					var res
					var child
					if (!inVPre && text !== " " && (res = parseText(text, delimiters))) {
						child = {
							type: 2,
							expression: res.expression,
							tokens: res.tokens,
							text: text,
						}
					} else if (
						text !== " " ||
						!children.length ||
						children[children.length - 1].text !== " "
					) {
						child = {
							type: 3,
							text: text,
						}
					}
					if (child) {
						if (options.outputSourceRange) {
							child.start = start
							child.end = end
						}
						children.push(child)
					}
				}
			},
			comment: function comment(text, start, end) {
				// adding anything as a sibling to the root node is forbidden
				// comments should still be allowed, but ignored
				if (currentParent) {
					var child = {
						type: 3,
						text: text,
						isComment: true,
					}
					if (options.outputSourceRange) {
						child.start = start
						child.end = end
					}
					currentParent.children.push(child)
				}
			},
		})
		return root
	}

	function processPre(el) {
		if (getAndRemoveAttr(el, "v-pre") != null) {
			el.pre = true
		}
	}

	function processRawAttrs(el) {
		var list = el.attrsList
		var len = list.length
		if (len) {
			var attrs = (el.attrs = new Array(len))
			for (var i = 0; i < len; i++) {
				attrs[i] = {
					name: list[i].name,
					value: JSON.stringify(list[i].value),
				}
				if (list[i].start != null) {
					attrs[i].start = list[i].start
					attrs[i].end = list[i].end
				}
			}
		} else if (!el.pre) {
			// non root node in pre blocks with no attributes
			el.plain = true
		}
	}

	function processElement(element, options) {
		processKey(element)

		// determine whether this is a plain element after
		// removing structural attributes
		element.plain =
			!element.key && !element.scopedSlots && !element.attrsList.length

		processRef(element)
		processSlotContent(element)
		processSlotOutlet(element)
		processComponent(element)
		for (var i = 0; i < transforms.length; i++) {
			element = transforms[i](element, options) || element
		}
		processAttrs(element)
		return element
	}

	function processKey(el) {
		var exp = getBindingAttr(el, "key")
		if (exp) {
			{
				if (el.tag === "template") {
					warn$2(
						"<template> cannot be keyed. Place the key on real elements instead.",
						getRawBindingAttr(el, "key")
					)
				}
				if (el.for) {
					var iterator = el.iterator2 || el.iterator1
					var parent = el.parent
					if (
						iterator &&
						iterator === exp &&
						parent &&
						parent.tag === "transition-group"
					) {
						warn$2(
							"Do not use v-for index as key on <transition-group> children, " +
								"this is the same as not using keys.",
							getRawBindingAttr(el, "key"),
							true /* tip */
						)
					}
				}
			}
			el.key = exp
		}
	}

	function processRef(el) {
		var ref = getBindingAttr(el, "ref")
		if (ref) {
			el.ref = ref
			el.refInFor = checkInFor(el)
		}
	}

	function processFor(el) {
		var exp
		if ((exp = getAndRemoveAttr(el, "v-for"))) {
			var res = parseFor(exp)
			if (res) {
				extend(el, res)
			} else {
				warn$2("Invalid v-for expression: " + exp, el.rawAttrsMap["v-for"])
			}
		}
	}

	function parseFor(exp) {
		var inMatch = exp.match(forAliasRE)
		if (!inMatch) {
			return
		}
		var res = {}
		res.for = inMatch[2].trim()
		var alias = inMatch[1].trim().replace(stripParensRE, "")
		var iteratorMatch = alias.match(forIteratorRE)
		if (iteratorMatch) {
			res.alias = alias.replace(forIteratorRE, "").trim()
			res.iterator1 = iteratorMatch[1].trim()
			if (iteratorMatch[2]) {
				res.iterator2 = iteratorMatch[2].trim()
			}
		} else {
			res.alias = alias
		}
		return res
	}

	function processIf(el) {
		var exp = getAndRemoveAttr(el, "v-if")
		if (exp) {
			el.if = exp
			addIfCondition(el, {
				exp: exp,
				block: el,
			})
		} else {
			if (getAndRemoveAttr(el, "v-else") != null) {
				el.else = true
			}
			var elseif = getAndRemoveAttr(el, "v-else-if")
			if (elseif) {
				el.elseif = elseif
			}
		}
	}

	function processIfConditions(el, parent) {
		var prev = findPrevElement(parent.children)
		if (prev && prev.if) {
			addIfCondition(prev, {
				exp: el.elseif,
				block: el,
			})
		} else {
			warn$2(
				"v-" +
					(el.elseif ? 'else-if="' + el.elseif + '"' : "else") +
					" " +
					"used on element <" +
					el.tag +
					"> without corresponding v-if.",
				el.rawAttrsMap[el.elseif ? "v-else-if" : "v-else"]
			)
		}
	}

	function findPrevElement(children) {
		var i = children.length
		while (i--) {
			if (children[i].type === 1) {
				return children[i]
			} else {
				if (children[i].text !== " ") {
					warn$2(
						'text "' +
							children[i].text.trim() +
							'" between v-if and v-else(-if) ' +
							"will be ignored.",
						children[i]
					)
				}
				children.pop()
			}
		}
	}

	function addIfCondition(el, condition) {
		if (!el.ifConditions) {
			el.ifConditions = []
		}
		el.ifConditions.push(condition)
	}

	function processOnce(el) {
		var once$$1 = getAndRemoveAttr(el, "v-once")
		if (once$$1 != null) {
			el.once = true
		}
	}

	// handle content being passed to a component as slot,
	// e.g. <template slot="xxx">, <div slot-scope="xxx">
	function processSlotContent(el) {
		var slotScope
		if (el.tag === "template") {
			slotScope = getAndRemoveAttr(el, "scope")
			/* istanbul ignore if */
			if (slotScope) {
				warn$2(
					'the "scope" attribute for scoped slots have been deprecated and ' +
						'replaced by "slot-scope" since 2.5. The new "slot-scope" attribute ' +
						"can also be used on plain elements in addition to <template> to " +
						"denote scoped slots.",
					el.rawAttrsMap["scope"],
					true
				)
			}
			el.slotScope = slotScope || getAndRemoveAttr(el, "slot-scope")
		} else if ((slotScope = getAndRemoveAttr(el, "slot-scope"))) {
			/* istanbul ignore if */
			if (el.attrsMap["v-for"]) {
				warn$2(
					"Ambiguous combined usage of slot-scope and v-for on <" +
						el.tag +
						"> " +
						"(v-for takes higher priority). Use a wrapper <template> for the " +
						"scoped slot to make it clearer.",
					el.rawAttrsMap["slot-scope"],
					true
				)
			}
			el.slotScope = slotScope
		}

		// slot="xxx"
		var slotTarget = getBindingAttr(el, "slot")
		if (slotTarget) {
			el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget
			el.slotTargetDynamic = !!(
				el.attrsMap[":slot"] || el.attrsMap["v-bind:slot"]
			)
			// preserve slot as an attribute for native shadow DOM compat
			// only for non-scoped slots.
			if (el.tag !== "template" && !el.slotScope) {
				addAttr(el, "slot", slotTarget, getRawBindingAttr(el, "slot"))
			}
		}

		// 2.6 v-slot syntax
		{
			if (el.tag === "template") {
				// v-slot on <template>
				var slotBinding = getAndRemoveAttrByRegex(el, slotRE)
				if (slotBinding) {
					{
						if (el.slotTarget || el.slotScope) {
							warn$2("Unexpected mixed usage of different slot syntaxes.", el)
						}
						if (el.parent && !maybeComponent(el.parent)) {
							warn$2(
								"<template v-slot> can only appear at the root level inside " +
									"the receiving component",
								el
							)
						}
					}
					var ref = getSlotName(slotBinding)
					var name = ref.name
					var dynamic = ref.dynamic
					el.slotTarget = name
					el.slotTargetDynamic = dynamic
					el.slotScope = slotBinding.value || emptySlotScopeToken // force it into a scoped slot for perf
				}
			} else {
				// v-slot on component, denotes default slot
				var slotBinding$1 = getAndRemoveAttrByRegex(el, slotRE)
				if (slotBinding$1) {
					{
						if (!maybeComponent(el)) {
							warn$2(
								"v-slot can only be used on components or <template>.",
								slotBinding$1
							)
						}
						if (el.slotScope || el.slotTarget) {
							warn$2("Unexpected mixed usage of different slot syntaxes.", el)
						}
						if (el.scopedSlots) {
							warn$2(
								"To avoid scope ambiguity, the default slot should also use " +
									"<template> syntax when there are other named slots.",
								slotBinding$1
							)
						}
					}
					// add the component's children to its default slot
					var slots = el.scopedSlots || (el.scopedSlots = {})
					var ref$1 = getSlotName(slotBinding$1)
					var name$1 = ref$1.name
					var dynamic$1 = ref$1.dynamic
					var slotContainer = (slots[name$1] = createASTElement(
						"template",
						[],
						el
					))
					slotContainer.slotTarget = name$1
					slotContainer.slotTargetDynamic = dynamic$1
					slotContainer.children = el.children.filter(function (c) {
						if (!c.slotScope) {
							c.parent = slotContainer
							return true
						}
					})
					slotContainer.slotScope = slotBinding$1.value || emptySlotScopeToken
					// remove children as they are returned from scopedSlots now
					el.children = []
					// mark el non-plain so data gets generated
					el.plain = false
				}
			}
		}
	}

	function getSlotName(binding) {
		var name = binding.name.replace(slotRE, "")
		if (!name) {
			if (binding.name[0] !== "#") {
				name = "default"
			} else {
				warn$2("v-slot shorthand syntax requires a slot name.", binding)
			}
		}
		return dynamicArgRE.test(name)
			? // dynamic [name]
			  { name: name.slice(1, -1), dynamic: true }
			: // static name
			  { name: '"' + name + '"', dynamic: false }
	}

	// handle <slot/> outlets
	function processSlotOutlet(el) {
		if (el.tag === "slot") {
			el.slotName = getBindingAttr(el, "name")
			if (el.key) {
				warn$2(
					"`key` does not work on <slot> because slots are abstract outlets " +
						"and can possibly expand into multiple elements. " +
						"Use the key on a wrapping element instead.",
					getRawBindingAttr(el, "key")
				)
			}
		}
	}

	function processComponent(el) {
		var binding
		if ((binding = getBindingAttr(el, "is"))) {
			el.component = binding
		}
		if (getAndRemoveAttr(el, "inline-template") != null) {
			el.inlineTemplate = true
		}
	}

	function processAttrs(el) {
		var list = el.attrsList
		var i, l, name, rawName, value, modifiers, syncGen, isDynamic
		for (i = 0, l = list.length; i < l; i++) {
			name = rawName = list[i].name
			value = list[i].value
			if (dirRE.test(name)) {
				// mark element as dynamic
				el.hasBindings = true
				// modifiers
				modifiers = parseModifiers(name.replace(dirRE, ""))
				// support .foo shorthand syntax for the .prop modifier
				if (modifiers) {
					name = name.replace(modifierRE, "")
				}
				if (bindRE.test(name)) {
					// v-bind
					name = name.replace(bindRE, "")
					value = parseFilters(value)
					isDynamic = dynamicArgRE.test(name)
					if (isDynamic) {
						name = name.slice(1, -1)
					}
					if (value.trim().length === 0) {
						warn$2(
							'The value for a v-bind expression cannot be empty. Found in "v-bind:' +
								name +
								'"'
						)
					}
					if (modifiers) {
						if (modifiers.prop && !isDynamic) {
							name = camelize(name)
							if (name === "innerHtml") {
								name = "innerHTML"
							}
						}
						if (modifiers.camel && !isDynamic) {
							name = camelize(name)
						}
						if (modifiers.sync) {
							syncGen = genAssignmentCode(value, "$event")
							if (!isDynamic) {
								addHandler(
									el,
									"update:" + camelize(name),
									syncGen,
									null,
									false,
									warn$2,
									list[i]
								)
								if (hyphenate(name) !== camelize(name)) {
									addHandler(
										el,
										"update:" + hyphenate(name),
										syncGen,
										null,
										false,
										warn$2,
										list[i]
									)
								}
							} else {
								// handler w/ dynamic event name
								addHandler(
									el,
									'"update:"+(' + name + ")",
									syncGen,
									null,
									false,
									warn$2,
									list[i],
									true // dynamic
								)
							}
						}
					}
					if (
						(modifiers && modifiers.prop) ||
						(!el.component &&
							platformMustUseProp(el.tag, el.attrsMap.type, name))
					) {
						addProp(el, name, value, list[i], isDynamic)
					} else {
						addAttr(el, name, value, list[i], isDynamic)
					}
				} else if (onRE.test(name)) {
					// v-on
					name = name.replace(onRE, "")
					isDynamic = dynamicArgRE.test(name)
					if (isDynamic) {
						name = name.slice(1, -1)
					}
					addHandler(
						el,
						name,
						value,
						modifiers,
						false,
						warn$2,
						list[i],
						isDynamic
					)
				} else {
					// normal directives
					name = name.replace(dirRE, "")
					// parse arg
					var argMatch = name.match(argRE)
					var arg = argMatch && argMatch[1]
					isDynamic = false
					if (arg) {
						name = name.slice(0, -(arg.length + 1))
						if (dynamicArgRE.test(arg)) {
							arg = arg.slice(1, -1)
							isDynamic = true
						}
					}
					addDirective(
						el,
						name,
						rawName,
						value,
						arg,
						isDynamic,
						modifiers,
						list[i]
					)
					if (name === "model") {
						checkForAliasModel(el, value)
					}
				}
			} else {
				// literal attribute
				{
					var res = parseText(value, delimiters)
					if (res) {
						warn$2(
							name +
								'="' +
								value +
								'": ' +
								"Interpolation inside attributes has been removed. " +
								"Use v-bind or the colon shorthand instead. For example, " +
								'instead of <div id="{{ val }}">, use <div :id="val">.',
							list[i]
						)
					}
				}
				addAttr(el, name, JSON.stringify(value), list[i])
				// #6887 firefox doesn't update muted state if set via attribute
				// even immediately after element creation
				if (
					!el.component &&
					name === "muted" &&
					platformMustUseProp(el.tag, el.attrsMap.type, name)
				) {
					addProp(el, name, "true", list[i])
				}
			}
		}
	}

	function checkInFor(el) {
		var parent = el
		while (parent) {
			if (parent.for !== undefined) {
				return true
			}
			parent = parent.parent
		}
		return false
	}

	function parseModifiers(name) {
		var match = name.match(modifierRE)
		if (match) {
			var ret = {}
			match.forEach(function (m) {
				ret[m.slice(1)] = true
			})
			return ret
		}
	}

	function makeAttrsMap(attrs) {
		var map = {}
		for (var i = 0, l = attrs.length; i < l; i++) {
			if (map[attrs[i].name] && !isIE && !isEdge) {
				warn$2("duplicate attribute: " + attrs[i].name, attrs[i])
			}
			map[attrs[i].name] = attrs[i].value
		}
		return map
	}

	// for script (e.g. type="x/template") or style, do not decode content
	function isTextTag(el) {
		return el.tag === "script" || el.tag === "style"
	}

	function isForbiddenTag(el) {
		return (
			el.tag === "style" ||
			(el.tag === "script" &&
				(!el.attrsMap.type || el.attrsMap.type === "text/javascript"))
		)
	}

	var ieNSBug = /^xmlns:NS\d+/
	var ieNSPrefix = /^NS\d+:/

	/* istanbul ignore next */
	function guardIESVGBug(attrs) {
		var res = []
		for (var i = 0; i < attrs.length; i++) {
			var attr = attrs[i]
			if (!ieNSBug.test(attr.name)) {
				attr.name = attr.name.replace(ieNSPrefix, "")
				res.push(attr)
			}
		}
		return res
	}

	function checkForAliasModel(el, value) {
		var _el = el
		while (_el) {
			if (_el.for && _el.alias === value) {
				warn$2(
					"<" +
						el.tag +
						' v-model="' +
						value +
						'">: ' +
						"You are binding v-model directly to a v-for iteration alias. " +
						"This will not be able to modify the v-for source array because " +
						"writing to the alias is like modifying a function local variable. " +
						"Consider using an array of objects and use v-model on an object property instead.",
					el.rawAttrsMap["v-model"]
				)
			}
			_el = _el.parent
		}
	}

	/*  */

	function preTransformNode(el, options) {
		if (el.tag === "input") {
			var map = el.attrsMap
			if (!map["v-model"]) {
				return
			}

			var typeBinding
			if (map[":type"] || map["v-bind:type"]) {
				typeBinding = getBindingAttr(el, "type")
			}
			if (!map.type && !typeBinding && map["v-bind"]) {
				typeBinding = "(" + map["v-bind"] + ").type"
			}

			if (typeBinding) {
				var ifCondition = getAndRemoveAttr(el, "v-if", true)
				var ifConditionExtra = ifCondition ? "&&(" + ifCondition + ")" : ""
				var hasElse = getAndRemoveAttr(el, "v-else", true) != null
				var elseIfCondition = getAndRemoveAttr(el, "v-else-if", true)
				// 1. checkbox
				var branch0 = cloneASTElement(el)
				// process for on the main node
				processFor(branch0)
				addRawAttr(branch0, "type", "checkbox")
				processElement(branch0, options)
				branch0.processed = true // prevent it from double-processed
				branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra
				addIfCondition(branch0, {
					exp: branch0.if,
					block: branch0,
				})
				// 2. add radio else-if condition
				var branch1 = cloneASTElement(el)
				getAndRemoveAttr(branch1, "v-for", true)
				addRawAttr(branch1, "type", "radio")
				processElement(branch1, options)
				addIfCondition(branch0, {
					exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra,
					block: branch1,
				})
				// 3. other
				var branch2 = cloneASTElement(el)
				getAndRemoveAttr(branch2, "v-for", true)
				addRawAttr(branch2, ":type", typeBinding)
				processElement(branch2, options)
				addIfCondition(branch0, {
					exp: ifCondition,
					block: branch2,
				})

				if (hasElse) {
					branch0.else = true
				} else if (elseIfCondition) {
					branch0.elseif = elseIfCondition
				}

				return branch0
			}
		}
	}

	function cloneASTElement(el) {
		return createASTElement(el.tag, el.attrsList.slice(), el.parent)
	}

	var model$1 = {
		preTransformNode: preTransformNode,
	}

	var modules$1 = [klass$1, style$1, model$1]

	/*  */

	function text(el, dir) {
		if (dir.value) {
			addProp(el, "textContent", "_s(" + dir.value + ")", dir)
		}
	}

	/*  */

	function html(el, dir) {
		if (dir.value) {
			addProp(el, "innerHTML", "_s(" + dir.value + ")", dir)
		}
	}

	var directives$1 = {
		model: model,
		text: text,
		html: html,
	}

	/*  */

	var baseOptions = {
		expectHTML: true,
		modules: modules$1,
		directives: directives$1,
		isPreTag: isPreTag,
		isUnaryTag: isUnaryTag,
		mustUseProp: mustUseProp,
		canBeLeftOpenTag: canBeLeftOpenTag,
		isReservedTag: isReservedTag,
		getTagNamespace: getTagNamespace,
		staticKeys: genStaticKeys(modules$1),
	}

	/*  */

	var isStaticKey
	var isPlatformReservedTag

	var genStaticKeysCached = cached(genStaticKeys$1)

	/**
	 * Goal of the optimizer: walk the generated template AST tree
	 * and detect sub-trees that are purely static, i.e. parts of
	 * the DOM that never needs to change.
	 *
	 * Once we detect these sub-trees, we can:
	 *
	 * 1. Hoist them into constants, so that we no longer need to
	 *    create fresh nodes for them on each re-render;
	 * 2. Completely skip them in the patching process.
	 */
	function optimize(root, options) {
		if (!root) {
			return
		}
		isStaticKey = genStaticKeysCached(options.staticKeys || "")
		isPlatformReservedTag = options.isReservedTag || no
		// first pass: mark all non-static nodes.
		markStatic$1(root)
		// second pass: mark static roots.
		markStaticRoots(root, false)
	}

	function genStaticKeys$1(keys) {
		return makeMap(
			"type,tag,attrsList,attrsMap,plain,parent,children,attrs,start,end,rawAttrsMap" +
				(keys ? "," + keys : "")
		)
	}

	function markStatic$1(node) {
		node.static = isStatic(node)
		if (node.type === 1) {
			// do not make component slot content static. this avoids
			// 1. components not able to mutate slot nodes
			// 2. static slot content fails for hot-reloading
			if (
				!isPlatformReservedTag(node.tag) &&
				node.tag !== "slot" &&
				node.attrsMap["inline-template"] == null
			) {
				return
			}
			for (var i = 0, l = node.children.length; i < l; i++) {
				var child = node.children[i]
				markStatic$1(child)
				if (!child.static) {
					node.static = false
				}
			}
			if (node.ifConditions) {
				for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
					var block = node.ifConditions[i$1].block
					markStatic$1(block)
					if (!block.static) {
						node.static = false
					}
				}
			}
		}
	}

	function markStaticRoots(node, isInFor) {
		if (node.type === 1) {
			if (node.static || node.once) {
				node.staticInFor = isInFor
			}
			// For a node to qualify as a static root, it should have children that
			// are not just static text. Otherwise the cost of hoisting out will
			// outweigh the benefits and it's better off to just always render it fresh.
			if (
				node.static &&
				node.children.length &&
				!(node.children.length === 1 && node.children[0].type === 3)
			) {
				node.staticRoot = true
				return
			} else {
				node.staticRoot = false
			}
			if (node.children) {
				for (var i = 0, l = node.children.length; i < l; i++) {
					markStaticRoots(node.children[i], isInFor || !!node.for)
				}
			}
			if (node.ifConditions) {
				for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
					markStaticRoots(node.ifConditions[i$1].block, isInFor)
				}
			}
		}
	}

	function isStatic(node) {
		if (node.type === 2) {
			// expression
			return false
		}
		if (node.type === 3) {
			// text
			return true
		}
		return !!(
			node.pre ||
			(!node.hasBindings && // no dynamic bindings
				!node.if &&
				!node.for && // not v-if or v-for or v-else
				!isBuiltInTag(node.tag) && // not a built-in
				isPlatformReservedTag(node.tag) && // not a component
				!isDirectChildOfTemplateFor(node) &&
				Object.keys(node).every(isStaticKey))
		)
	}

	function isDirectChildOfTemplateFor(node) {
		while (node.parent) {
			node = node.parent
			if (node.tag !== "template") {
				return false
			}
			if (node.for) {
				return true
			}
		}
		return false
	}

	/*  */

	var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function(?:\s+[\w$]+)?\s*\(/
	var fnInvokeRE = /\([^)]*?\);*$/
	var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/

	// KeyboardEvent.keyCode aliases
	var keyCodes = {
		esc: 27,
		tab: 9,
		enter: 13,
		space: 32,
		up: 38,
		left: 37,
		right: 39,
		down: 40,
		delete: [8, 46],
	}

	// KeyboardEvent.key aliases
	var keyNames = {
		// #7880: IE11 and Edge use `Esc` for Escape key name.
		esc: ["Esc", "Escape"],
		tab: "Tab",
		enter: "Enter",
		// #9112: IE11 uses `Spacebar` for Space key name.
		space: [" ", "Spacebar"],
		// #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
		up: ["Up", "ArrowUp"],
		left: ["Left", "ArrowLeft"],
		right: ["Right", "ArrowRight"],
		down: ["Down", "ArrowDown"],
		// #9112: IE11 uses `Del` for Delete key name.
		delete: ["Backspace", "Delete", "Del"],
	}

	// #4868: modifiers that prevent the execution of the listener
	// need to explicitly return null so that we can determine whether to remove
	// the listener for .once
	var genGuard = function (condition) {
		return "if(" + condition + ")return null;"
	}

	var modifierCode = {
		stop: "$event.stopPropagation();",
		prevent: "$event.preventDefault();",
		self: genGuard("$event.target !== $event.currentTarget"),
		ctrl: genGuard("!$event.ctrlKey"),
		shift: genGuard("!$event.shiftKey"),
		alt: genGuard("!$event.altKey"),
		meta: genGuard("!$event.metaKey"),
		left: genGuard("'button' in $event && $event.button !== 0"),
		middle: genGuard("'button' in $event && $event.button !== 1"),
		right: genGuard("'button' in $event && $event.button !== 2"),
	}

	function genHandlers(events, isNative) {
		var prefix = isNative ? "nativeOn:" : "on:"
		var staticHandlers = ""
		var dynamicHandlers = ""
		for (var name in events) {
			var handlerCode = genHandler(events[name])
			if (events[name] && events[name].dynamic) {
				dynamicHandlers += name + "," + handlerCode + ","
			} else {
				staticHandlers += '"' + name + '":' + handlerCode + ","
			}
		}
		staticHandlers = "{" + staticHandlers.slice(0, -1) + "}"
		if (dynamicHandlers) {
			return (
				prefix +
				"_d(" +
				staticHandlers +
				",[" +
				dynamicHandlers.slice(0, -1) +
				"])"
			)
		} else {
			return prefix + staticHandlers
		}
	}

	function genHandler(handler) {
		if (!handler) {
			return "function(){}"
		}

		if (Array.isArray(handler)) {
			return (
				"[" +
				handler
					.map(function (handler) {
						return genHandler(handler)
					})
					.join(",") +
				"]"
			)
		}

		var isMethodPath = simplePathRE.test(handler.value)
		var isFunctionExpression = fnExpRE.test(handler.value)
		var isFunctionInvocation = simplePathRE.test(
			handler.value.replace(fnInvokeRE, "")
		)

		if (!handler.modifiers) {
			if (isMethodPath || isFunctionExpression) {
				return handler.value
			}
			return (
				"function($event){" +
				(isFunctionInvocation ? "return " + handler.value : handler.value) +
				"}"
			) // inline statement
		} else {
			var code = ""
			var genModifierCode = ""
			var keys = []
			for (var key in handler.modifiers) {
				if (modifierCode[key]) {
					genModifierCode += modifierCode[key]
					// left/right
					if (keyCodes[key]) {
						keys.push(key)
					}
				} else if (key === "exact") {
					var modifiers = handler.modifiers
					genModifierCode += genGuard(
						["ctrl", "shift", "alt", "meta"]
							.filter(function (keyModifier) {
								return !modifiers[keyModifier]
							})
							.map(function (keyModifier) {
								return "$event." + keyModifier + "Key"
							})
							.join("||")
					)
				} else {
					keys.push(key)
				}
			}
			if (keys.length) {
				code += genKeyFilter(keys)
			}
			// Make sure modifiers like prevent and stop get executed after key filtering
			if (genModifierCode) {
				code += genModifierCode
			}
			var handlerCode = isMethodPath
				? "return " + handler.value + "($event)"
				: isFunctionExpression
				? "return (" + handler.value + ")($event)"
				: isFunctionInvocation
				? "return " + handler.value
				: handler.value
			return "function($event){" + code + handlerCode + "}"
		}
	}

	function genKeyFilter(keys) {
		return (
			// make sure the key filters only apply to KeyboardEvents
			// #9441: can't use 'keyCode' in $event because Chrome autofill fires fake
			// key events that do not have keyCode property...
			"if(!$event.type.indexOf('key')&&" +
			keys.map(genFilterCode).join("&&") +
			")return null;"
		)
	}

	function genFilterCode(key) {
		var keyVal = parseInt(key, 10)
		if (keyVal) {
			return "$event.keyCode!==" + keyVal
		}
		var keyCode = keyCodes[key]
		var keyName = keyNames[key]
		return (
			"_k($event.keyCode," +
			JSON.stringify(key) +
			"," +
			JSON.stringify(keyCode) +
			"," +
			"$event.key," +
			"" +
			JSON.stringify(keyName) +
			")"
		)
	}

	/*  */

	function on(el, dir) {
		if (dir.modifiers) {
			warn("v-on without argument does not support modifiers.")
		}
		el.wrapListeners = function (code) {
			return "_g(" + code + "," + dir.value + ")"
		}
	}

	/*  */

	function bind$1(el, dir) {
		el.wrapData = function (code) {
			return (
				"_b(" +
				code +
				",'" +
				el.tag +
				"'," +
				dir.value +
				"," +
				(dir.modifiers && dir.modifiers.prop ? "true" : "false") +
				(dir.modifiers && dir.modifiers.sync ? ",true" : "") +
				")"
			)
		}
	}

	/*  */

	var baseDirectives = {
		on: on,
		bind: bind$1,
		cloak: noop,
	}

	/*  */

	var CodegenState = function CodegenState(options) {
		this.options = options
		this.warn = options.warn || baseWarn
		this.transforms = pluckModuleFunction(options.modules, "transformCode")
		this.dataGenFns = pluckModuleFunction(options.modules, "genData")
		this.directives = extend(extend({}, baseDirectives), options.directives)
		var isReservedTag = options.isReservedTag || no
		this.maybeComponent = function (el) {
			return !!el.component || !isReservedTag(el.tag)
		}
		this.onceId = 0
		this.staticRenderFns = []
		this.pre = false
	}

	function generate(ast, options) {
		var state = new CodegenState(options)
		var code = ast ? genElement(ast, state) : '_c("div")'
		return {
			render: "with(this){return " + code + "}",
			staticRenderFns: state.staticRenderFns,
		}
	}

	function genElement(el, state) {
		if (el.parent) {
			el.pre = el.pre || el.parent.pre
		}

		if (el.staticRoot && !el.staticProcessed) {
			return genStatic(el, state)
		} else if (el.once && !el.onceProcessed) {
			return genOnce(el, state)
		} else if (el.for && !el.forProcessed) {
			return genFor(el, state)
		} else if (el.if && !el.ifProcessed) {
			return genIf(el, state)
		} else if (el.tag === "template" && !el.slotTarget && !state.pre) {
			return genChildren(el, state) || "void 0"
		} else if (el.tag === "slot") {
			return genSlot(el, state)
		} else {
			// component or element
			var code
			if (el.component) {
				code = genComponent(el.component, el, state)
			} else {
				var data
				if (!el.plain || (el.pre && state.maybeComponent(el))) {
					data = genData$2(el, state)
				}

				var children = el.inlineTemplate ? null : genChildren(el, state, true)
				code =
					"_c('" +
					el.tag +
					"'" +
					(data ? "," + data : "") +
					(children ? "," + children : "") +
					")"
			}
			// module transforms
			for (var i = 0; i < state.transforms.length; i++) {
				code = state.transforms[i](el, code)
			}
			return code
		}
	}

	// hoist static sub-trees out
	function genStatic(el, state) {
		el.staticProcessed = true
		// Some elements (templates) need to behave differently inside of a v-pre
		// node.  All pre nodes are static roots, so we can use this as a location to
		// wrap a state change and reset it upon exiting the pre node.
		var originalPreState = state.pre
		if (el.pre) {
			state.pre = el.pre
		}
		state.staticRenderFns.push(
			"with(this){return " + genElement(el, state) + "}"
		)
		state.pre = originalPreState
		return (
			"_m(" +
			(state.staticRenderFns.length - 1) +
			(el.staticInFor ? ",true" : "") +
			")"
		)
	}

	// v-once
	function genOnce(el, state) {
		el.onceProcessed = true
		if (el.if && !el.ifProcessed) {
			return genIf(el, state)
		} else if (el.staticInFor) {
			var key = ""
			var parent = el.parent
			while (parent) {
				if (parent.for) {
					key = parent.key
					break
				}
				parent = parent.parent
			}
			if (!key) {
				state.warn(
					"v-once can only be used inside v-for that is keyed. ",
					el.rawAttrsMap["v-once"]
				)
				return genElement(el, state)
			}
			return (
				"_o(" + genElement(el, state) + "," + state.onceId++ + "," + key + ")"
			)
		} else {
			return genStatic(el, state)
		}
	}

	function genIf(el, state, altGen, altEmpty) {
		el.ifProcessed = true // avoid recursion
		return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
	}

	function genIfConditions(conditions, state, altGen, altEmpty) {
		if (!conditions.length) {
			return altEmpty || "_e()"
		}

		var condition = conditions.shift()
		if (condition.exp) {
			return (
				"(" +
				condition.exp +
				")?" +
				genTernaryExp(condition.block) +
				":" +
				genIfConditions(conditions, state, altGen, altEmpty)
			)
		} else {
			return "" + genTernaryExp(condition.block)
		}

		// v-if with v-once should generate code like (a)?_m(0):_m(1)
		function genTernaryExp(el) {
			return altGen
				? altGen(el, state)
				: el.once
				? genOnce(el, state)
				: genElement(el, state)
		}
	}

	function genFor(el, state, altGen, altHelper) {
		var exp = el.for
		var alias = el.alias
		var iterator1 = el.iterator1 ? "," + el.iterator1 : ""
		var iterator2 = el.iterator2 ? "," + el.iterator2 : ""

		if (
			state.maybeComponent(el) &&
			el.tag !== "slot" &&
			el.tag !== "template" &&
			!el.key
		) {
			state.warn(
				"<" +
					el.tag +
					' v-for="' +
					alias +
					" in " +
					exp +
					'">: component lists rendered with ' +
					"v-for should have explicit keys. " +
					"See https://vuejs.org/guide/list.html#key for more info.",
				el.rawAttrsMap["v-for"],
				true /* tip */
			)
		}

		el.forProcessed = true // avoid recursion
		return (
			(altHelper || "_l") +
			"((" +
			exp +
			")," +
			"function(" +
			alias +
			iterator1 +
			iterator2 +
			"){" +
			"return " +
			(altGen || genElement)(el, state) +
			"})"
		)
	}

	function genData$2(el, state) {
		var data = "{"

		// directives first.
		// directives may mutate the el's other properties before they are generated.
		var dirs = genDirectives(el, state)
		if (dirs) {
			data += dirs + ","
		}

		// key
		if (el.key) {
			data += "key:" + el.key + ","
		}
		// ref
		if (el.ref) {
			data += "ref:" + el.ref + ","
		}
		if (el.refInFor) {
			data += "refInFor:true,"
		}
		// pre
		if (el.pre) {
			data += "pre:true,"
		}
		// record original tag name for components using "is" attribute
		if (el.component) {
			data += 'tag:"' + el.tag + '",'
		}
		// module data generation functions
		for (var i = 0; i < state.dataGenFns.length; i++) {
			data += state.dataGenFns[i](el)
		}
		// attributes
		if (el.attrs) {
			data += "attrs:" + genProps(el.attrs) + ","
		}
		// DOM props
		if (el.props) {
			data += "domProps:" + genProps(el.props) + ","
		}
		// event handlers
		if (el.events) {
			data += genHandlers(el.events, false) + ","
		}
		if (el.nativeEvents) {
			data += genHandlers(el.nativeEvents, true) + ","
		}
		// slot target
		// only for non-scoped slots
		if (el.slotTarget && !el.slotScope) {
			data += "slot:" + el.slotTarget + ","
		}
		// scoped slots
		if (el.scopedSlots) {
			data += genScopedSlots(el, el.scopedSlots, state) + ","
		}
		// component v-model
		if (el.model) {
			data +=
				"model:{value:" +
				el.model.value +
				",callback:" +
				el.model.callback +
				",expression:" +
				el.model.expression +
				"},"
		}
		// inline-template
		if (el.inlineTemplate) {
			var inlineTemplate = genInlineTemplate(el, state)
			if (inlineTemplate) {
				data += inlineTemplate + ","
			}
		}
		data = data.replace(/,$/, "") + "}"
		// v-bind dynamic argument wrap
		// v-bind with dynamic arguments must be applied using the same v-bind object
		// merge helper so that class/style/mustUseProp attrs are handled correctly.
		if (el.dynamicAttrs) {
			data =
				"_b(" + data + ',"' + el.tag + '",' + genProps(el.dynamicAttrs) + ")"
		}
		// v-bind data wrap
		if (el.wrapData) {
			data = el.wrapData(data)
		}
		// v-on data wrap
		if (el.wrapListeners) {
			data = el.wrapListeners(data)
		}
		return data
	}

	function genDirectives(el, state) {
		var dirs = el.directives
		if (!dirs) {
			return
		}
		var res = "directives:["
		var hasRuntime = false
		var i, l, dir, needRuntime
		for (i = 0, l = dirs.length; i < l; i++) {
			dir = dirs[i]
			needRuntime = true
			var gen = state.directives[dir.name]
			if (gen) {
				// compile-time directive that manipulates AST.
				// returns true if it also needs a runtime counterpart.
				needRuntime = !!gen(el, dir, state.warn)
			}
			if (needRuntime) {
				hasRuntime = true
				res +=
					'{name:"' +
					dir.name +
					'",rawName:"' +
					dir.rawName +
					'"' +
					(dir.value
						? ",value:(" +
						  dir.value +
						  "),expression:" +
						  JSON.stringify(dir.value)
						: "") +
					(dir.arg
						? ",arg:" + (dir.isDynamicArg ? dir.arg : '"' + dir.arg + '"')
						: "") +
					(dir.modifiers ? ",modifiers:" + JSON.stringify(dir.modifiers) : "") +
					"},"
			}
		}
		if (hasRuntime) {
			return res.slice(0, -1) + "]"
		}
	}

	function genInlineTemplate(el, state) {
		var ast = el.children[0]
		if (el.children.length !== 1 || ast.type !== 1) {
			state.warn(
				"Inline-template components must have exactly one child element.",
				{ start: el.start }
			)
		}
		if (ast && ast.type === 1) {
			var inlineRenderFns = generate(ast, state.options)
			return (
				"inlineTemplate:{render:function(){" +
				inlineRenderFns.render +
				"},staticRenderFns:[" +
				inlineRenderFns.staticRenderFns
					.map(function (code) {
						return "function(){" + code + "}"
					})
					.join(",") +
				"]}"
			)
		}
	}

	function genScopedSlots(el, slots, state) {
		// by default scoped slots are considered "stable", this allows child
		// components with only scoped slots to skip forced updates from parent.
		// but in some cases we have to bail-out of this optimization
		// for example if the slot contains dynamic names, has v-if or v-for on them...
		var needsForceUpdate =
			el.for ||
			Object.keys(slots).some(function (key) {
				var slot = slots[key]
				return (
					slot.slotTargetDynamic ||
					slot.if ||
					slot.for ||
					containsSlotChild(slot) // is passing down slot from parent which may be dynamic
				)
			})

		// #9534: if a component with scoped slots is inside a conditional branch,
		// it's possible for the same component to be reused but with different
		// compiled slot content. To avoid that, we generate a unique key based on
		// the generated code of all the slot contents.
		var needsKey = !!el.if

		// OR when it is inside another scoped slot or v-for (the reactivity may be
		// disconnected due to the intermediate scope variable)
		// #9438, #9506
		// TODO: this can be further optimized by properly analyzing in-scope bindings
		// and skip force updating ones that do not actually use scope variables.
		if (!needsForceUpdate) {
			var parent = el.parent
			while (parent) {
				if (
					(parent.slotScope && parent.slotScope !== emptySlotScopeToken) ||
					parent.for
				) {
					needsForceUpdate = true
					break
				}
				if (parent.if) {
					needsKey = true
				}
				parent = parent.parent
			}
		}

		var generatedSlots = Object.keys(slots)
			.map(function (key) {
				return genScopedSlot(slots[key], state)
			})
			.join(",")

		return (
			"scopedSlots:_u([" +
			generatedSlots +
			"]" +
			(needsForceUpdate ? ",null,true" : "") +
			(!needsForceUpdate && needsKey
				? ",null,false," + hash(generatedSlots)
				: "") +
			")"
		)
	}

	function hash(str) {
		var hash = 5381
		var i = str.length
		while (i) {
			hash = (hash * 33) ^ str.charCodeAt(--i)
		}
		return hash >>> 0
	}

	function containsSlotChild(el) {
		if (el.type === 1) {
			if (el.tag === "slot") {
				return true
			}
			return el.children.some(containsSlotChild)
		}
		return false
	}

	function genScopedSlot(el, state) {
		var isLegacySyntax = el.attrsMap["slot-scope"]
		if (el.if && !el.ifProcessed && !isLegacySyntax) {
			return genIf(el, state, genScopedSlot, "null")
		}
		if (el.for && !el.forProcessed) {
			return genFor(el, state, genScopedSlot)
		}
		var slotScope =
			el.slotScope === emptySlotScopeToken ? "" : String(el.slotScope)
		var fn =
			"function(" +
			slotScope +
			"){" +
			"return " +
			(el.tag === "template"
				? el.if && isLegacySyntax
					? "(" +
					  el.if +
					  ")?" +
					  (genChildren(el, state) || "undefined") +
					  ":undefined"
					: genChildren(el, state) || "undefined"
				: genElement(el, state)) +
			"}"
		// reverse proxy v-slot without scope on this.$slots
		var reverseProxy = slotScope ? "" : ",proxy:true"
		return (
			"{key:" +
			(el.slotTarget || '"default"') +
			",fn:" +
			fn +
			reverseProxy +
			"}"
		)
	}

	function genChildren(el, state, checkSkip, altGenElement, altGenNode) {
		var children = el.children
		if (children.length) {
			var el$1 = children[0]
			// optimize single v-for
			if (
				children.length === 1 &&
				el$1.for &&
				el$1.tag !== "template" &&
				el$1.tag !== "slot"
			) {
				var normalizationType = checkSkip
					? state.maybeComponent(el$1)
						? ",1"
						: ",0"
					: ""
				return (
					"" + (altGenElement || genElement)(el$1, state) + normalizationType
				)
			}
			var normalizationType$1 = checkSkip
				? getNormalizationType(children, state.maybeComponent)
				: 0
			var gen = altGenNode || genNode
			return (
				"[" +
				children
					.map(function (c) {
						return gen(c, state)
					})
					.join(",") +
				"]" +
				(normalizationType$1 ? "," + normalizationType$1 : "")
			)
		}
	}

	// determine the normalization needed for the children array.
	// 0: no normalization needed
	// 1: simple normalization needed (possible 1-level deep nested array)
	// 2: full normalization needed
	function getNormalizationType(children, maybeComponent) {
		var res = 0
		for (var i = 0; i < children.length; i++) {
			var el = children[i]
			if (el.type !== 1) {
				continue
			}
			if (
				needsNormalization(el) ||
				(el.ifConditions &&
					el.ifConditions.some(function (c) {
						return needsNormalization(c.block)
					}))
			) {
				res = 2
				break
			}
			if (
				maybeComponent(el) ||
				(el.ifConditions &&
					el.ifConditions.some(function (c) {
						return maybeComponent(c.block)
					}))
			) {
				res = 1
			}
		}
		return res
	}

	function needsNormalization(el) {
		return el.for !== undefined || el.tag === "template" || el.tag === "slot"
	}

	function genNode(node, state) {
		if (node.type === 1) {
			return genElement(node, state)
		} else if (node.type === 3 && node.isComment) {
			return genComment(node)
		} else {
			return genText(node)
		}
	}

	function genText(text) {
		return (
			"_v(" +
			(text.type === 2
				? text.expression // no need for () because already wrapped in _s()
				: transformSpecialNewlines(JSON.stringify(text.text))) +
			")"
		)
	}

	function genComment(comment) {
		return "_e(" + JSON.stringify(comment.text) + ")"
	}

	function genSlot(el, state) {
		var slotName = el.slotName || '"default"'
		var children = genChildren(el, state)
		var res = "_t(" + slotName + (children ? "," + children : "")
		var attrs =
			el.attrs || el.dynamicAttrs
				? genProps(
						(el.attrs || []).concat(el.dynamicAttrs || []).map(function (attr) {
							return {
								// slot props are camelized
								name: camelize(attr.name),
								value: attr.value,
								dynamic: attr.dynamic,
							}
						})
				  )
				: null
		var bind$$1 = el.attrsMap["v-bind"]
		if ((attrs || bind$$1) && !children) {
			res += ",null"
		}
		if (attrs) {
			res += "," + attrs
		}
		if (bind$$1) {
			res += (attrs ? "" : ",null") + "," + bind$$1
		}
		return res + ")"
	}

	// componentName is el.component, take it as argument to shun flow's pessimistic refinement
	function genComponent(componentName, el, state) {
		var children = el.inlineTemplate ? null : genChildren(el, state, true)
		return (
			"_c(" +
			componentName +
			"," +
			genData$2(el, state) +
			(children ? "," + children : "") +
			")"
		)
	}

	function genProps(props) {
		var staticProps = ""
		var dynamicProps = ""
		for (var i = 0; i < props.length; i++) {
			var prop = props[i]
			var value = transformSpecialNewlines(prop.value)
			if (prop.dynamic) {
				dynamicProps += prop.name + "," + value + ","
			} else {
				staticProps += '"' + prop.name + '":' + value + ","
			}
		}
		staticProps = "{" + staticProps.slice(0, -1) + "}"
		if (dynamicProps) {
			return "_d(" + staticProps + ",[" + dynamicProps.slice(0, -1) + "])"
		} else {
			return staticProps
		}
	}

	// #3895, #4268
	function transformSpecialNewlines(text) {
		return text.replace(/\u2028/g, "\\u2028").replace(/\u2029/g, "\\u2029")
	}

	/*  */

	// these keywords should not appear inside expressions, but operators like
	// typeof, instanceof and in are allowed
	var prohibitedKeywordRE = new RegExp(
		"\\b" +
			(
				"do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const," +
				"super,throw,while,yield,delete,export,import,return,switch,default," +
				"extends,finally,continue,debugger,function,arguments"
			)
				.split(",")
				.join("\\b|\\b") +
			"\\b"
	)

	// these unary operators should not be used as property/method names
	var unaryOperatorsRE = new RegExp(
		"\\b" +
			"delete,typeof,void".split(",").join("\\s*\\([^\\)]*\\)|\\b") +
			"\\s*\\([^\\)]*\\)"
	)

	// strip strings in expressions
	var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g

	// detect problematic expressions in a template
	function detectErrors(ast, warn) {
		if (ast) {
			checkNode(ast, warn)
		}
	}

	function checkNode(node, warn) {
		if (node.type === 1) {
			for (var name in node.attrsMap) {
				if (dirRE.test(name)) {
					var value = node.attrsMap[name]
					if (value) {
						var range = node.rawAttrsMap[name]
						if (name === "v-for") {
							checkFor(node, 'v-for="' + value + '"', warn, range)
						} else if (name === "v-slot" || name[0] === "#") {
							checkFunctionParameterExpression(
								value,
								name + '="' + value + '"',
								warn,
								range
							)
						} else if (onRE.test(name)) {
							checkEvent(value, name + '="' + value + '"', warn, range)
						} else {
							checkExpression(value, name + '="' + value + '"', warn, range)
						}
					}
				}
			}
			if (node.children) {
				for (var i = 0; i < node.children.length; i++) {
					checkNode(node.children[i], warn)
				}
			}
		} else if (node.type === 2) {
			checkExpression(node.expression, node.text, warn, node)
		}
	}

	function checkEvent(exp, text, warn, range) {
		var stripped = exp.replace(stripStringRE, "")
		var keywordMatch = stripped.match(unaryOperatorsRE)
		if (keywordMatch && stripped.charAt(keywordMatch.index - 1) !== "$") {
			warn(
				"avoid using JavaScript unary operator as property name: " +
					'"' +
					keywordMatch[0] +
					'" in expression ' +
					text.trim(),
				range
			)
		}
		checkExpression(exp, text, warn, range)
	}

	function checkFor(node, text, warn, range) {
		checkExpression(node.for || "", text, warn, range)
		checkIdentifier(node.alias, "v-for alias", text, warn, range)
		checkIdentifier(node.iterator1, "v-for iterator", text, warn, range)
		checkIdentifier(node.iterator2, "v-for iterator", text, warn, range)
	}

	function checkIdentifier(ident, type, text, warn, range) {
		if (typeof ident === "string") {
			try {
				new Function("var " + ident + "=_")
			} catch (e) {
				warn(
					"invalid " + type + ' "' + ident + '" in expression: ' + text.trim(),
					range
				)
			}
		}
	}

	function checkExpression(exp, text, warn, range) {
		try {
			new Function("return " + exp)
		} catch (e) {
			var keywordMatch = exp
				.replace(stripStringRE, "")
				.match(prohibitedKeywordRE)
			if (keywordMatch) {
				warn(
					"avoid using JavaScript keyword as property name: " +
						'"' +
						keywordMatch[0] +
						'"\n  Raw expression: ' +
						text.trim(),
					range
				)
			} else {
				warn(
					"invalid expression: " +
						e.message +
						" in\n\n" +
						"    " +
						exp +
						"\n\n" +
						"  Raw expression: " +
						text.trim() +
						"\n",
					range
				)
			}
		}
	}

	function checkFunctionParameterExpression(exp, text, warn, range) {
		try {
			new Function(exp, "")
		} catch (e) {
			warn(
				"invalid function parameter expression: " +
					e.message +
					" in\n\n" +
					"    " +
					exp +
					"\n\n" +
					"  Raw expression: " +
					text.trim() +
					"\n",
				range
			)
		}
	}

	/*  */

	var range = 2

	function generateCodeFrame(source, start, end) {
		if (start === void 0) start = 0
		if (end === void 0) end = source.length

		var lines = source.split(/\r?\n/)
		var count = 0
		var res = []
		for (var i = 0; i < lines.length; i++) {
			count += lines[i].length + 1
			if (count >= start) {
				for (var j = i - range; j <= i + range || end > count; j++) {
					if (j < 0 || j >= lines.length) {
						continue
					}
					res.push(
						"" +
							(j + 1) +
							repeat$1(" ", 3 - String(j + 1).length) +
							"|  " +
							lines[j]
					)
					var lineLength = lines[j].length
					if (j === i) {
						// push underline
						var pad = start - (count - lineLength) + 1
						var length = end > count ? lineLength - pad : end - start
						res.push("   |  " + repeat$1(" ", pad) + repeat$1("^", length))
					} else if (j > i) {
						if (end > count) {
							var length$1 = Math.min(end - count, lineLength)
							res.push("   |  " + repeat$1("^", length$1))
						}
						count += lineLength + 1
					}
				}
				break
			}
		}
		return res.join("\n")
	}

	function repeat$1(str, n) {
		var result = ""
		if (n > 0) {
			while (true) {
				// eslint-disable-line
				if (n & 1) {
					result += str
				}
				n >>>= 1
				if (n <= 0) {
					break
				}
				str += str
			}
		}
		return result
	}

	/*  */

	function createFunction(code, errors) {
		try {
			return new Function(code)
		} catch (err) {
			errors.push({ err: err, code: code })
			return noop
		}
	}

	function createCompileToFunctionFn(compile) {
		var cache = Object.create(null)

		return function compileToFunctions(template, options, vm) {
			options = extend({}, options)
			var warn$$1 = options.warn || warn
			delete options.warn

			/* istanbul ignore if */
			{
				// detect possible CSP restriction
				try {
					new Function("return 1")
				} catch (e) {
					if (e.toString().match(/unsafe-eval|CSP/)) {
						warn$$1(
							"It seems you are using the standalone build of Vue.js in an " +
								"environment with Content Security Policy that prohibits unsafe-eval. " +
								"The template compiler cannot work in this environment. Consider " +
								"relaxing the policy to allow unsafe-eval or pre-compiling your " +
								"templates into render functions."
						)
					}
				}
			}

			// check cache
			var key = options.delimiters
				? String(options.delimiters) + template
				: template
			if (cache[key]) {
				return cache[key]
			}

			// compile
			var compiled = compile(template, options)

			// check compilation errors/tips
			{
				if (compiled.errors && compiled.errors.length) {
					if (options.outputSourceRange) {
						compiled.errors.forEach(function (e) {
							warn$$1(
								"Error compiling template:\n\n" +
									e.msg +
									"\n\n" +
									generateCodeFrame(template, e.start, e.end),
								vm
							)
						})
					} else {
						warn$$1(
							"Error compiling template:\n\n" +
								template +
								"\n\n" +
								compiled.errors
									.map(function (e) {
										return "- " + e
									})
									.join("\n") +
								"\n",
							vm
						)
					}
				}
				if (compiled.tips && compiled.tips.length) {
					if (options.outputSourceRange) {
						compiled.tips.forEach(function (e) {
							return tip(e.msg, vm)
						})
					} else {
						compiled.tips.forEach(function (msg) {
							return tip(msg, vm)
						})
					}
				}
			}

			// turn code into functions
			var res = {}
			var fnGenErrors = []
			res.render = createFunction(compiled.render, fnGenErrors)
			res.staticRenderFns = compiled.staticRenderFns.map(function (code) {
				return createFunction(code, fnGenErrors)
			})

			// check function generation errors.
			// this should only happen if there is a bug in the compiler itself.
			// mostly for codegen development use
			/* istanbul ignore if */
			{
				if (
					(!compiled.errors || !compiled.errors.length) &&
					fnGenErrors.length
				) {
					warn$$1(
						"Failed to generate render function:\n\n" +
							fnGenErrors
								.map(function (ref) {
									var err = ref.err
									var code = ref.code

									return err.toString() + " in\n\n" + code + "\n"
								})
								.join("\n"),
						vm
					)
				}
			}

			return (cache[key] = res)
		}
	}

	/*  */

	function createCompilerCreator(baseCompile) {
		return function createCompiler(baseOptions) {
			function compile(template, options) {
				var finalOptions = Object.create(baseOptions)
				var errors = []
				var tips = []

				var warn = function (msg, range, tip) {
					;(tip ? tips : errors).push(msg)
				}

				if (options) {
					if (options.outputSourceRange) {
						// $flow-disable-line
						var leadingSpaceLength = template.match(/^\s*/)[0].length

						warn = function (msg, range, tip) {
							var data = { msg: msg }
							if (range) {
								if (range.start != null) {
									data.start = range.start + leadingSpaceLength
								}
								if (range.end != null) {
									data.end = range.end + leadingSpaceLength
								}
							}
							;(tip ? tips : errors).push(data)
						}
					}
					// merge custom modules
					if (options.modules) {
						finalOptions.modules = (baseOptions.modules || []).concat(
							options.modules
						)
					}
					// merge custom directives
					if (options.directives) {
						finalOptions.directives = extend(
							Object.create(baseOptions.directives || null),
							options.directives
						)
					}
					// copy other options
					for (var key in options) {
						if (key !== "modules" && key !== "directives") {
							finalOptions[key] = options[key]
						}
					}
				}

				finalOptions.warn = warn

				var compiled = baseCompile(template.trim(), finalOptions)
				{
					detectErrors(compiled.ast, warn)
				}
				compiled.errors = errors
				compiled.tips = tips
				return compiled
			}

			return {
				compile: compile,
				compileToFunctions: createCompileToFunctionFn(compile),
			}
		}
	}

	/*  */

	// `createCompilerCreator` allows creating compilers that use alternative
	// parser/optimizer/codegen, e.g the SSR optimizing compiler.
	// Here we just export a default compiler using the default parts.
	var createCompiler = createCompilerCreator(function baseCompile(
		template,
		options
	) {
		var ast = parse(template.trim(), options)
		if (options.optimize !== false) {
			optimize(ast, options)
		}
		var code = generate(ast, options)
		return {
			ast: ast,
			render: code.render,
			staticRenderFns: code.staticRenderFns,
		}
	})

	/*  */

	var ref$1 = createCompiler(baseOptions)
	var compile = ref$1.compile
	var compileToFunctions = ref$1.compileToFunctions

	/*  */

	// check whether current browser encodes a char inside attribute values
	var div
	function getShouldDecode(href) {
		div = div || document.createElement("div")
		div.innerHTML = href ? '<a href="\n"/>' : '<div a="\n"/>'
		return div.innerHTML.indexOf("&#10;") > 0
	}

	// #3663: IE encodes newlines inside attribute values while other browsers don't
	var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false
	// #6828: chrome encodes content in a[href]
	var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false

	/*  */

	var idToTemplate = cached(function (id) {
		var el = query(id)
		return el && el.innerHTML
	})

	var mount = Vue.prototype.$mount
	Vue.prototype.$mount = function (el, hydrating) {
		el = el && query(el)

		/* istanbul ignore if */
		if (el === document.body || el === document.documentElement) {
			warn(
				"Do not mount Vue to <html> or <body> - mount to normal elements instead."
			)
			return this
		}

		var options = this.$options
		// resolve template/el and convert to render function
		if (!options.render) {
			var template = options.template
			if (template) {
				if (typeof template === "string") {
					if (template.charAt(0) === "#") {
						template = idToTemplate(template)
						/* istanbul ignore if */
						if (!template) {
							warn(
								"Template element not found or is empty: " + options.template,
								this
							)
						}
					}
				} else if (template.nodeType) {
					template = template.innerHTML
				} else {
					{
						warn("invalid template option:" + template, this)
					}
					return this
				}
			} else if (el) {
				template = getOuterHTML(el)
			}
			if (template) {
				/* istanbul ignore if */
				if (config.performance && mark) {
					mark("compile")
				}

				var ref = compileToFunctions(
					template,
					{
						outputSourceRange: "development" !== "production",
						shouldDecodeNewlines: shouldDecodeNewlines,
						shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
						delimiters: options.delimiters,
						comments: options.comments,
					},
					this
				)
				var render = ref.render
				var staticRenderFns = ref.staticRenderFns
				options.render = render
				options.staticRenderFns = staticRenderFns

				/* istanbul ignore if */
				if (config.performance && mark) {
					mark("compile end")
					measure("vue " + this._name + " compile", "compile", "compile end")
				}
			}
		}
		return mount.call(this, el, hydrating)
	}

	/**
	 * Get outerHTML of elements, taking care
	 * of SVG elements in IE as well.
	 */
	function getOuterHTML(el) {
		if (el.outerHTML) {
			return el.outerHTML
		} else {
			var container = document.createElement("div")
			container.appendChild(el.cloneNode(true))
			return container.innerHTML
		}
	}

	Vue.compile = compileToFunctions

	return Vue
})
